diff --git a/customize.dist/application_config.js b/customize.dist/application_config.js
index 9cf29d565..079c36eab 100644
--- a/customize.dist/application_config.js
+++ b/customize.dist/application_config.js
@@ -12,6 +12,7 @@ define(function() {
      *  You can change their duration here (measured in milliseconds)
      */
     config.notificationTimeout = 5000;
+    config.disableUserlistNotifications = false;
 
     config.enablePinning = true;
 
diff --git a/www/common/sframe-app-framework.js b/www/common/sframe-app-framework.js
index 8295560ad..3f4772514 100644
--- a/www/common/sframe-app-framework.js
+++ b/www/common/sframe-app-framework.js
@@ -391,8 +391,7 @@ define([
                 // really basic operational transform
                 transformFunction: options.transformFunction || JsonOT.validate,
 
-                // This one causes a big mess.
-                //patchTransformer: options.patchTransformer || JsonOT.patchTransformer,
+                patchTransformer: options.patchTransformer || JsonOT.patchTransformer,
 
                 // cryptpad debug logging (default is 1)
                 // logLevel: 0,
diff --git a/www/common/sframe-chainpad-listmap.js b/www/common/sframe-chainpad-listmap.js
index 22b7e6216..a4c63641d 100644
--- a/www/common/sframe-chainpad-listmap.js
+++ b/www/common/sframe-chainpad-listmap.js
@@ -685,7 +685,9 @@ define([
             });
         };
 
+        var ready = false;
         realtimeOptions.onReady = function (info) {
+            if (ready) { return; }
             // create your patcher
             if (realtime !== info.realtime) {
                 realtime = rt.realtime = info.realtime;
@@ -709,6 +711,7 @@ define([
             DeepProxy.checkLocalChange(proxy, onLocal);
 
             initializing = false;
+            ready = true;
         };
 
         realtimeOptions.onAbort = function (info) {
diff --git a/www/common/toolbar3.js b/www/common/toolbar3.js
index fdebae133..29d78e91c 100644
--- a/www/common/toolbar3.js
+++ b/www/common/toolbar3.js
@@ -886,6 +886,7 @@ define([
                 // type : 1 (+1 user), 0 (rename existing user), -1 (-1 user)
                 if (typeof name === "undefined") { return; }
                 name = name || Messages.anonymous;
+                if (Config.disableUserlistNotifications) { return; }
                 switch(type) {
                     case 1:
                         Cryptpad.log(Messages._getKey("notifyJoined", [name]));
diff --git a/www/poll/inner.js b/www/poll/inner.js
index 767817ddd..eb62cddcd 100644
--- a/www/poll/inner.js
+++ b/www/poll/inner.js
@@ -651,7 +651,7 @@ define([
 
         if (editable === false) {
             // disable all the things
-            $('.icp-app-poll-realtime input, .cp-app-poll-realtime button, .cp-app-poll-upper button, .cp-app-poll-realtime textarea').attr('disabled', true);
+            $('.cp-app-poll-realtime input, .cp-app-poll-realtime button, .cp-app-poll-upper button, .cp-app-poll-realtime textarea').attr('disabled', true);
             $('span.cp-app-poll-table-edit, span.cp-app-poll-table-remove').hide();
             $('span.cp-app-poll-table-lock').addClass('fa-lock').removeClass('fa-unlock')
                 .attr('title', Messages.poll_locked)
diff --git a/www/whiteboard/inner.js b/www/whiteboard/inner.js
index f5ccd22b9..626ad1a90 100644
--- a/www/whiteboard/inner.js
+++ b/www/whiteboard/inner.js
@@ -208,6 +208,7 @@ define([
         });
 
         var setEditable = function (bool) {
+            APP.editable = bool;
             if (readOnly && bool) { return; }
             if (bool) { $controls.css('display', 'flex'); }
             else { $controls.hide(); }
@@ -237,17 +238,9 @@ define([
         APP.upload = function (title) {
             var canvas = $canvas[0];
             APP.canvas.deactivateAll().renderAll();
-            var finish = function (thumb) {
-                canvas.toBlob(function (blob) {
-                    blob.name = title;
-                    APP.FM.handleFile(blob, void 0, thumb);
-                });
-            };
-
-            Thumb.fromCanvas(canvas, function (e, blob) {
-                // carry on even if you can't get a thumbnail
-                if (e) { console.error(e); }
-                finish(blob);
+            canvas.toBlob(function (blob) {
+                blob.name = title;
+                APP.FM.handleFile(blob);
             });
         };
 
@@ -287,6 +280,7 @@ define([
             })
             .on('dblclick', function (e) {
                 e.preventDefault();
+                if (!APP.editable) { return; }
                 pickColor(Colors.rgb2hex($color.css('background-color')), function (c) {
                     $color.css({
                         'background-color': c,