Sometimes builds fail due to an apparent filesystem permissions error

[paxperscientiam]

Hello again.

Describe the bug
At times, Game Boy Studio will fail to build a project due to an apparent write permission error.

For example:

Preparing variables... 
Preparing images... 
Preparing tilesets... 
Preparing ui... 
Preparing sprites... 
Preparing avatars... 
Preparing emotes... 
Preparing music... 
Preparing fonts... 
Preparing scenes... 
Preparation complete 
Compiling Events... 
Error: Could not write file /var/folders/mr/c4ql6d651hd110c02qgfsf0m0000gn/T/_gbstools/.vscode/Readme Emulicious debugging.txt: Error: ENOENT: no such file or directory, open '/var/folders/mr/c4ql6d651hd110c02qgfsf0m0000gn/T/.dev.gbstudio.gbstudio.toiP3i' 
Cancelled Build 

Warnings:
Error: Could not write file /var/folders/mr/c4ql6d651hd110c02qgfsf0m0000gn/T/_gbstools/.vscode/Readme Emulicious debugging.txt: Error: ENOENT: no such file or directory, open '/var/folders/mr/c4ql6d651hd110c02qgfsf0m0000gn/T/.dev.gbstudio.gbstudio.toiP3i' 

To Reproduce
I'm sorry. I don't know how to reproduce it. It may involve keeping GBS open for a while, but I don't know.

Expected behavior
I expect for builds to be able to continue without an apparent filesystem permission error.

Screenshots
At bottom.

Platform (please complete the following information):

• OS: [macOS 15.3.1]
• App version [4.1.3]

Additional context
I've tried nuking the build cache from the project directory and restarting the application, but that doesn't work. The only solution I've found is restarting my computer :/

Thank you.

EDIT
I noticed a warning about this in the changelog. I see now that there's a builtin workaround in the settings.

EDIT 2
Seems the setting is ignored. Despite customizing the temp dir for the project, GBS still tries to write to $TMPDIR

EDIT 3
A partial amendment to last edit. GBS actually did write something to <PROJECT_DIR>/tmp, though this isn't reflected in the build log.

[paxperscientiam]

Interesting development. There may be a connection with one of the other applications I had running alongside GBS.

While the above was happening, I had Steam, Aseprite (launched by steam), and Tiled running. After quitting those three and GBS, I started GBS again. I tried building and it worked both with the custom temporary directory and TMPDIR.

I may be close to figuring out how to reproduce this issue.