Comment 12 for bug 1843092

We found an additional data point:

Here's how we reproduce it:

1. Save the design in Pcbnew by clicking the save button.

2. Wait for the save to complete.

3. Close the PCBnew window

4. Try and close the main kicad screen.

We expect it to close, but instead, it freezes.

This ONLY happens on large designs; when we do this using smaller designs, it does not happen.