Creating dynamic properties and reparenting a Control break bindings on Singletons

Creating dynamic properties and reparenting a Control break bindings on Singletons

This issue affects Qt Design Studio.

I attached a minimal example to reproduce the issue.

Generating multiple dynamic items on the root item and reparenting a control (Button) triggers the issue. A relatively simple expression cannot be resolved anymore.

with importing/creating/reparenting a control, I could not reproduce the issue.

The debug build triggers an assert which might help and a release build shows the error.

I added two booleans to document what triggers the issue.
No reporting the Button or not creating the extra property will "fix" the issue.

So far all Qt version I tried triggered the same issue.