Zoomable lighttable crash when making thumbnails larger - v4.6.0

I just stumbled upon a crash in zoomable lighttable in darktable 4.6.0.

I can reproduce it at will doing the following - with 2 photos in the lighttable.

Step 1:
Zoome the thumbnails to a small size, in the example I set the “row length” to 20.

Step 2:
Move the 2 thumbnails to upper left corner, so the left one is not visible

Step 3:
Reduce the “row length” using the mouse wheel (so the thumbnails get bigger), and kaboom!

I have created a couple of screen shots to illustrate the issue, and captuted the console output from darktable.
The 2 attached files are licensed under the Creative Commons CC0 1.0 Universal license

I have compiled DT 4.6.0 myself in this way


Yes, it’s reproducible.

You may want to report it on github.

d common.txt (39.1 KB)
darktable_bt_PUR1G2.txt (32.9 KB)

Thank you @apostel338 - will report on github
/Per

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Github bug report

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Possible fix, but waiting for review thumbtable: Ensure we at least keep one thumb visible. by TurboGit · Pull Request #15995 · darktable-org/darktable · GitHub