Glyphs 4 hanging on save in pixel mode

Frequently, Glyphs 4 hangs with the beach ball when I save a file after making changes in pixel mode. I’m on Mac Tahoe 26.6. I’m not exactly sure what seems to cause it, but it usually happens after I’ve been editing a file for a while.

When it hangs, does it take a long time to save or does the app no longer become responsive?

Could you provide me with one of the with which this is happening? That could help reproduce and fix the issue. You can send me the file in a privately in direct message (click my profile picture → Message).

It becomes no longer responsive. I’ve left it for upwards of 20 mins before Force Quitting it.

I’m trying to narrow down a consistently reproducible workflow that causes it. So far the steps below are reproducible.

File setup: I’m working with pixel mode, so the file I have is just a minimal file, with a pixel component and a basic latin characters.

  1. Open file
  2. Go to a glyph and enter pixel mode and do some drawing.
  3. Go to a different glyph and do some drawing (either from sidebar or Font tab)
  4. Cmd+S to save
  5. Glyphs becomes unresponsive.