Unable to save any web testing project changes

Yes. Any change in the affected window/tab can recover the situation. In one of the linked threads, I documented how to close the tab, reopen it (then the * reappears) and then it will save - same file, same number of lines of code, same number of tabs open. To me, that suggests that the editor object has lost the ability to save - closing and reopening another tab with the same file gives you a NEW editor and “something” knows the file is dirty and needs saving because the * reappears.

That isn’t going to help find the problem any more than just using the app. The issue is a runtime/memory/io/fs problem. Extra debugging/logging needs to added around the Exception handler that launches the “…Try SaveAs…” dialog.

Most of my keyword/classes files seem to average around 400 lines. Any one of them can have the issue. I have only one that goes beyond 1500 lines.

For me, over the 3.5 years I’ve been monitoring the bug, it’s happened on…

Win10 laptop, 8 GB ram.
Win7 desktop, 16GB ram.
Win10 desktop, 32GB ram.

All running Katalon editing the same project.