Tile priority paint causing white screen crash (3.1.1 MacOS M2)

[joeledge]

Describe the bug Tile priority paint crashes app on various background images added to the project

To Reproduce Steps to reproduce the behavior:

1. Go to the scene in test project
2. Click on the scene
3. Try tile priority paint tool, it should work fine
4. Change the background of the scene to 'ship.png'
5. Try tile priority paint tool, it should turn the window white and crash the app

Expected behavior It should show the tile priority paint tool

Platform (please complete the following information):

• OS: macOS Ventura 13.4.1
• App version: 3.1.1

Additional context Example project – t-Prioritypaintbug.zip Seems to happen on images added to a project, rather than ones that already exist in it, not sure exactly what causes it, as happens with various images I've saved out and happens in a bare test project

[joeledge]

I've noticed if you save the project, close the app and then reopen, you can paint tile priority, so appears to be an issue with changing/setting a background image and then trying to paint tile priority.