Mac OS freezes everytime I run Pinta

[venkatarangan]

Description

Pinta had been working normally on my system for several months.

On 15 June 2026, I attempted to open an image generated by ChatGPT (attached to this issue). Since then, launching Pinta consistently causes the entire system to become unresponsive.

This happens whether I:

Launch Pinta directly from the Applications folder
Open the image file using Open With → Pinta

I suspect Pinta may be attempting to automatically reopen the previously opened image on startup, but I have not been able to confirm this.

Expected Behaviour

Pinta should launch normally, or display an error if the image file cannot be opened.

Actual Behaviour

Within a few seconds of launching Pinta:

The macOS Dock disappears
The display briefly flickers or shakes several times
The entire system becomes unresponsive
Keyboard and mouse input stop working
A normal restart is not possible; I have to force a power cycle using the power button
Steps to Reproduce
Launch Pinta
Observe that macOS becomes unresponsive

If relevant, the attached image file may be required to reproduce the issue.

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Device: Mac mini (2024)
Processor: Apple M4
Memory: 16 GB
Operating System: macOS Tahoe 26.5.1
Pinta Version

I am unable to determine the installed Pinta version because the application no longer launches.

I also downloaded and installed the latest version available on 15 June 2026, and the same behaviour occurs.

[cameronwhite]

I haven't been able to reproduce this on macOS 26.5.1 after loading the attached image. I don't think there's any reason why loading an image would cause issues with running Pinta in the future, and more likely something else changed on the system ..

You could try clearing out Pinta's settings folder, e.g. from a terminal mv ~/Library/Application\ Support/Pinta/ ~/Library/Application\ Support/Pinta.backup so that you still have a copy of the old settings if they were indeed at fault