UI Elements Become Unresponsive After Running in Design Mode

After running a QML project (by selecting the run button on the bottom left) while in QML design mode, most UI objects become unresponsive when returning to edit mode. The main menu remains active, as do the Edit, Design, and Debug buttons. But, the project tree view, the editor view, and the output windows all cease to visually update themselves.

Steps to reproduce:

1. Create a new project. Select Application -> Qt Quick Application - Stack
2. Give the project a name, set the minimum required Qt version to 5.11, and de-select using the virtual keyboard.
3. Select a desktop kit for Qt 5.11 GCC 64bit
4. When the project opens, double click HomeForm.ui.qml to open it in designer mode
5. Run the project
6. Close the application
7. Select the Edit button from the ribbon on the left to return to edit mode
8. Observe that most UI elements are unresponsive and do not visually update

Work around

• The only work around seems to be to restart Qt Creator and re-opening the project
• But, opening a UI form in designer and running the application will trigger the same bad behavior even after a restart