[Bug]: App freezes after one image switch due to open_explorer_action signal connection

[albinwwoxnerud]

Checklist

• I am using an up-to-date version.
• I have read the documentation.
• I have searched existing issues.

TagStudio Version

9.5.0-pre4

Operating System & Version

macOS, 15.3.1, 24D70

Description

When running the app directly with Python, I can open one image and switch to another once. After that, the app locks up and doesn’t allow any further interaction except favoriting via the UI star element.

Issue:

The issue is in tagstudio/src/qt/widgets/preview/preview_thumb.py, specifically in update_preview. The line that causes the lockup:

self.open_explorer_action.triggered.connect(self.opener.open_explorer)

It looks like QAction.triggered emits a boolean, which doesn’t match the expected signature of open_explorer, leading to the UI freezing.

Fix:

Changing the connection to use a lambda prevents the issue:

self.open_explorer_action.triggered.connect(lambda checked=False: self.opener.open_explorer())

This made switching work as expected for me.

I have a PR ready if this is confirmed to be a general issue and not something specific to my setup.

Expected Behavior

It should allow switching between images without restrictions.

Steps to Reproduce

1. Open TagStudio
2. Open a folder of JPEGs
3. Open one image
4. Switch to another image
5. Application freezes

Logs

No logs due to freeze

[CyanVoxel]

I'm also on macOS 15 and have not encountered or been able to replicate this issue.

When running the app directly with Python

Normally I would assume you meant that you ran the current git version from a development environment, but saying that you're on version 9.5.0-pre4 confuses me a bit. How is it exactly that you're running the program? Are you pulling from the repo or using one of the macOS app releases?

[albinwwoxnerud]

Hello,

I apologize for any confusion. I based my version number on the pyproject.toml file, which was recently updated to version "9.5.0". I was actually using 9.5.0, but I incorrectly stated it as 9.5.0-pre4.

I am running the development version from the main branch. Sorry again for the mix-up, and I appreciate your patience.