diff --git a/src/components/views/elements/AppTile.js b/src/components/views/elements/AppTile.js
index f3ebe24c15..b862a1e912 100644
--- a/src/components/views/elements/AppTile.js
+++ b/src/components/views/elements/AppTile.js
@@ -23,7 +23,6 @@ import PropTypes from 'prop-types';
 import {MatrixClientPeg} from '../../../MatrixClientPeg';
 import AccessibleButton from './AccessibleButton';
 import { _t } from '../../../languageHandler';
-import * as sdk from '../../../index';
 import AppPermission from './AppPermission';
 import AppWarning from './AppWarning';
 import Spinner from './Spinner';
@@ -375,19 +374,18 @@ export default class AppTile extends React.Component {
                         />
                     </div>
                 );
-                // if the widget would be allowed to remain on screen, we must put it in
-                // a PersistedElement from the get-go, otherwise the iframe will be
-                // re-mounted later when we do.
-                if (this.props.whitelistCapabilities.includes('m.always_on_screen')) {
-                    const PersistedElement = sdk.getComponent("elements.PersistedElement");
-                    // Also wrap the PersistedElement in a div to fix the height, otherwise
-                    // AppTile's border is in the wrong place
-                    appTileBody = <div className="mx_AppTile_persistedWrapper">
-                        <PersistedElement persistKey={this._persistKey}>
-                            {appTileBody}
-                        </PersistedElement>
-                    </div>;
-                }
+
+                // all widgets can theoretically be allowed to remain on screen, so we wrap
+                // them all in a PersistedElement from the get-go. If we wait, the iframe will
+                // be re-mounted later, which means the widget has to start over, which is bad.
+
+                // Also wrap the PersistedElement in a div to fix the height, otherwise
+                // AppTile's border is in the wrong place
+                appTileBody = <div className="mx_AppTile_persistedWrapper">
+                    <PersistedElement persistKey={this._persistKey}>
+                        {appTileBody}
+                    </PersistedElement>
+                </div>;
             }
         }
 
@@ -474,10 +472,6 @@ AppTile.propTypes = {
     handleMinimisePointerEvents: PropTypes.bool,
     // Optionally hide the popout widget icon
     showPopout: PropTypes.bool,
-    // Widget capabilities to allow by default (without user confirmation)
-    // NOTE -- Use with caution. This is intended to aid better integration / UX
-    // basic widget capabilities, e.g. injecting sticker message events.
-    whitelistCapabilities: PropTypes.array,
     // Is this an instance of a user widget
     userWidget: PropTypes.bool,
 };
@@ -488,7 +482,6 @@ AppTile.defaultProps = {
     showTitle: true,
     showPopout: true,
     handleMinimisePointerEvents: false,
-    whitelistCapabilities: [],
     userWidget: false,
     miniMode: false,
 };
diff --git a/src/components/views/elements/PersistentApp.js b/src/components/views/elements/PersistentApp.js
index 64825dfc96..a1e805c085 100644
--- a/src/components/views/elements/PersistentApp.js
+++ b/src/components/views/elements/PersistentApp.js
@@ -71,7 +71,6 @@ export default class PersistentApp extends React.Component {
                     appEvent.getStateKey(), appEvent.getContent(), appEvent.getSender(),
                     persistentWidgetInRoomId, appEvent.getId(),
                 );
-                const capWhitelist = WidgetUtils.getCapWhitelistForAppTypeInRoomId(app.type, persistentWidgetInRoomId);
                 const AppTile = sdk.getComponent('elements.AppTile');
                 return <AppTile
                     key={app.id}
@@ -82,7 +81,6 @@ export default class PersistentApp extends React.Component {
                     creatorUserId={app.creatorUserId}
                     widgetPageTitle={WidgetUtils.getWidgetDataTitle(app)}
                     waitForIframeLoad={app.waitForIframeLoad}
-                    whitelistCapabilities={capWhitelist}
                     miniMode={true}
                     showMenubar={false}
                 />;
diff --git a/src/components/views/right_panel/WidgetCard.tsx b/src/components/views/right_panel/WidgetCard.tsx
index 7dbb77df18..c1753e90e3 100644
--- a/src/components/views/right_panel/WidgetCard.tsx
+++ b/src/components/views/right_panel/WidgetCard.tsx
@@ -103,7 +103,6 @@ const WidgetCard: React.FC<IProps> = ({ room, widgetId, onClose }) => {
             creatorUserId={app.creatorUserId}
             widgetPageTitle={WidgetUtils.getWidgetDataTitle(app)}
             waitForIframeLoad={app.waitForIframeLoad}
-            whitelistCapabilities={WidgetUtils.getCapWhitelistForAppTypeInRoomId(app.type, room.roomId)}
         />
     </BaseCard>;
 };
diff --git a/src/components/views/rooms/AppsDrawer.js b/src/components/views/rooms/AppsDrawer.js
index 9cf213b44e..3208844bc5 100644
--- a/src/components/views/rooms/AppsDrawer.js
+++ b/src/components/views/rooms/AppsDrawer.js
@@ -210,8 +210,6 @@ export default class AppsDrawer extends React.Component {
         if (!this.props.showApps) return <div />;
 
         const apps = this.state.apps.map((app, index, arr) => {
-            const capWhitelist = WidgetUtils.getCapWhitelistForAppTypeInRoomId(app.type, this.props.room.roomId);
-
             return (<AppTile
                 key={app.id}
                 app={app}
@@ -221,7 +219,6 @@ export default class AppsDrawer extends React.Component {
                 creatorUserId={app.creatorUserId}
                 widgetPageTitle={WidgetUtils.getWidgetDataTitle(app)}
                 waitForIframeLoad={app.waitForIframeLoad}
-                whitelistCapabilities={capWhitelist}
             />);
         });
 
diff --git a/src/components/views/rooms/Stickerpicker.js b/src/components/views/rooms/Stickerpicker.js
index ae7ed48898..0b81f82721 100644
--- a/src/components/views/rooms/Stickerpicker.js
+++ b/src/components/views/rooms/Stickerpicker.js
@@ -280,7 +280,6 @@ export default class Stickerpicker extends React.Component {
                             showPopout={false}
                             onMinimiseClick={this._onHideStickersClick}
                             handleMinimisePointerEvents={true}
-                            whitelistCapabilities={['m.sticker', 'visibility']}
                             userWidget={true}
                         />
                     </PersistedElement>
diff --git a/src/stores/widgets/StopGapWidget.ts b/src/stores/widgets/StopGapWidget.ts
index 04e27dd5fc..e8c0ea141e 100644
--- a/src/stores/widgets/StopGapWidget.ts
+++ b/src/stores/widgets/StopGapWidget.ts
@@ -75,8 +75,8 @@ interface IAppTileProps {
 
 // TODO: Don't use this because it's wrong
 class ElementWidget extends Widget {
-    constructor(w) {
-        super(w);
+    constructor(private rawDefinition: IWidget) {
+        super(rawDefinition);
     }
 
     public get templateUrl(): string {
@@ -137,12 +137,7 @@ class ElementWidget extends Widget {
 
     public getCompleteUrl(params: ITemplateParams, asPopout=false): string {
         return runTemplate(asPopout ? this.popoutTemplateUrl : this.templateUrl, {
-            // we need to supply a whole widget to the template, but don't have
-            // easy access to the definition the superclass is using, so be sad
-            // and gutwrench it.
-            // This isn't a problem when the widget architecture is fixed and this
-            // subclass gets deleted.
-            ...super['definition'], // XXX: Private member access
+            ...this.rawDefinition,
             data: this.rawData,
         }, params);
     }
@@ -351,18 +346,39 @@ export class StopGapWidget extends EventEmitter {
         MatrixClientPeg.get().on('event', this.onEvent);
         MatrixClientPeg.get().on('Event.decrypted', this.onEventDecrypted);
 
-        if (WidgetType.JITSI.matches(this.mockWidget.type)) {
-            this.messaging.on("action:set_always_on_screen",
-                (ev: CustomEvent<IStickyActionRequest>) => {
-                    if (this.messaging.hasCapability(MatrixCapabilities.AlwaysOnScreen)) {
+        this.messaging.on(`action:${WidgetApiFromWidgetAction.UpdateAlwaysOnScreen}`,
+            (ev: CustomEvent<IStickyActionRequest>) => {
+                if (this.messaging.hasCapability(MatrixCapabilities.AlwaysOnScreen)) {
+                    if (WidgetType.JITSI.matches(this.mockWidget.type)) {
                         CountlyAnalytics.instance.trackJoinCall(this.appTileProps.room.roomId, true, true);
-                        ActiveWidgetStore.setWidgetPersistence(this.mockWidget.id, ev.detail.data.value);
-                        ev.preventDefault();
-                        this.messaging.transport.reply(ev.detail, <IWidgetApiRequestEmptyData>{}); // ack
                     }
-                },
-            );
-        } else if (WidgetType.STICKERPICKER.matches(this.mockWidget.type)) {
+                    ActiveWidgetStore.setWidgetPersistence(this.mockWidget.id, ev.detail.data.value);
+                    ev.preventDefault();
+                    this.messaging.transport.reply(ev.detail, <IWidgetApiRequestEmptyData>{}); // ack
+                }
+            },
+        );
+
+        // TODO: Replace this event listener with appropriate driver functionality once the API
+        // establishes a sane way to send events back and forth.
+        this.messaging.on(`action:${WidgetApiFromWidgetAction.SendSticker}`,
+            (ev: CustomEvent<IStickerActionRequest>) => {
+                if (this.messaging.hasCapability(MatrixCapabilities.StickerSending)) {
+                    // Acknowledge first
+                    ev.preventDefault();
+                    this.messaging.transport.reply(ev.detail, <IWidgetApiRequestEmptyData>{});
+
+                    // Send the sticker
+                    defaultDispatcher.dispatch({
+                        action: 'm.sticker',
+                        data: ev.detail.data,
+                        widgetId: this.mockWidget.id,
+                    });
+                }
+            },
+        );
+
+        if (WidgetType.STICKERPICKER.matches(this.mockWidget.type)) {
             this.messaging.on(`action:${ElementWidgetActions.OpenIntegrationManager}`,
                 (ev: CustomEvent<IWidgetApiRequest>) => {
                     // Acknowledge first
@@ -394,23 +410,6 @@ export class StopGapWidget extends EventEmitter {
                     }
                 },
             );
-
-            // TODO: Replace this event listener with appropriate driver functionality once the API
-            // establishes a sane way to send events back and forth.
-            this.messaging.on(`action:${WidgetApiFromWidgetAction.SendSticker}`,
-                (ev: CustomEvent<IStickerActionRequest>) => {
-                    // Acknowledge first
-                    ev.preventDefault();
-                    this.messaging.transport.reply(ev.detail, <IWidgetApiRequestEmptyData>{});
-
-                    // Send the sticker
-                    defaultDispatcher.dispatch({
-                        action: 'm.sticker',
-                        data: ev.detail.data,
-                        widgetId: this.mockWidget.id,
-                    });
-                },
-            );
         }
     }