Reset mouse state when switching tabs

Fixes #3639

packages/node_modules/@node-red/editor-client/src/js/ui/view.js

@@ -385,6 +385,9 @@ RED.view = (function() {
         drag_lines = [];
 
         RED.events.on("workspace:change",function(event) {
+            // Just in case the mouse left the workspace whilst doing an action,
+            // put us back into default mode so the refresh works
+            mouse_mode = 0
             if (event.old !== 0) {
                 workspaceScrollPositions[event.old] = {
                     left:chart.scrollLeft(),