[QA] Linux: landscape pictures don't have an overlay icon

[HanaGemela]

Pre-submission Checks

• [X] I checked for similar issues, but could not find any. I also checked the closed issues. I could not contribute additional information to any existing issue.
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Describe the QA issue

Ubuntu 22.04 owncloud 5.1.0 rc1 nautilus file manager, nemo

Fedora 38 Nemo file manager

Steps to reproduce the issue

1. Add a demo.owncloud.com account
2. Check an overlay icon of /Photos/Lake-Constance.jpg

Screenshots

Expected behavior

An icon

Actual behavior

No icon

[michaelstingl]

@HanaGemela regression? Or same with 4.2?

[fmoc]

Looks like an upstream bug.

[fmoc]

Note: this can affect Nautilus as well as its forks. Looks like it depends on the icon position. Only when the overlay is shown in the bottom right corner, images with (extreme?) landscape aspect ratio are affected.

[fmoc]

I've experimented a bit. It seems that at an aspect ratio of w/h <= 1.65 (roughly), the overlay icon is shown in all cases.

[fmoc]

Apparently, this is a hardcoded issue either within Nautilus and its forks or libgdk. Either way, this needs to be reported upstream. We should report it with the distributions which configure the bottom-right overlay, or alternatively ask Nautilus and its forks to review the problem.