expanding GH commit messages in palemoon&palefill causes unexpected jumping

[rofl0r]

when looking at a list of commits, e.g. https://github.com/sabotage-linux/sabotage/commits/master/ where many have descriptive commit messages using more than a single line, expanding those with the "..." button leads to the focus jumping around unexpectedly, and often to the chosen commit message not expanding. the first expansion usually works, later ones not. after expanding the second item, the cursor/view often jumps back to the first already-expanded item. this is using latest palefill and palemoon 33.6.0.