Unsaved duplicate scripts seemingly get randomly created

[SaracenOne]

Godot version

84c404f

System information

Windows 10, Vulkan, Intel® Core™ i7-8700K, Nvidia GTX 1080 (471.11)

Issue description

When working with GDScript files, sometimes they will randomly spawn unsaved broken duplicates upon saving:

Regression caused since merging of #67714

Steps to reproduce

Unknown as of yet, but occurs frequently and may be triggered by having errors in your scripts

Minimal reproduction project

N/A

[akien-mga]

CC @adamscott

[adamscott]

Maybe fixed by #68872. Can you see if it happens still? #68872 reduces the number of errors, but does not fix the unsaved duplicate scripts issue.

[dalexeev]

Regression caused since merging of #67714

I noticed the bug before merging #67714, for example when renaming/moving a script. (Although after #67714 the bug began to happen much more often.)

[dmaz]

I've seen this a couple times when I click a script icon from an instanced scene in the Scene tree. It seems I may have "fixed" my issue by "detatching" the script and reattaching it back.

I wonder if it has to do with the script uids still not working as well as they use to (there are a couple tickets I can ref if needed). for me, every time godot opens my project, many of the scenes complain about not finding resources by UID and loads them by name (even though they are correct) and then generates new UIDs. I wonder if that can cause some of these to get out of sync?

[SaracenOne]

From my subsequent tests after the updates, I haven't noticed the particular initial issue anymore. It sounds like this problem may be deeper from other people's comments, but I'm going to close this for now. I'll reopen or create a new issue if I encounter anything similar