Cannot select past the 8th entry in history file list

Niche bug. It only happens one one of the project (and I tried removing the project / adding from an existing repo again, without success, the bug is still here).

When selecting a commit in the history list, I can only select one of the first 8 files in the file list. Any click on an item below is ignored, and a double click opens the 8th file. I can right click on any file (which ends up selecting it, and showing the diff, as intended) but from there, arrow navigation jumps back to the 8th item.