[Arnavion]

100-100 -> 99-100 -> 99-99 works for me in Chromium on desktop Linux.

I do have a different visual bug. If I start at 23-25 and then drag to 24-25, the right knob at 25 shifts by a few pixels. Drag the left knob back to 23 and the right knob also shifts back.

[lilyball]

Ah yes I should have specified browser engine. My bug was in Safari on macOS.