Error message of the Colorize Mask Editing tool

Develop Artists Feedback & Testing
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When selecting the Colorize Mask Editing tool in Krita 5.3 pre-alpha(latest) on Windows 11, this message appears.

It happens whether I click the toolbox icon or use the shortcut key. I can use the software normally, so it’s not a major issue, but does anyone know why this happens?
This has been occurring for several months. It happens even after disabling all plugins.

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Yeah, I’ve been getting error using it too, lately.

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I confirmed that this issue does not occur in Krita 5.3.0-beta1 on Windows 11.

By the way, the “clear” action doesn’t work in the Colorize mask. The Eraser tool works fine.

Is this a bug?