Issue with compact mode

[rng70]

When Zen browser's compact mode is enabled with Hide both(tab bar & top bar) option a weird window/div appears in the left-bottom corner. I have no idea what it is or how to resolve the issue. The only option that is to close the window/div using the x button that appears with it.

Added a short video of it. Don't know if it is reproducible or not.

Distro: Ubuntu 24.04.1 (also faced the same issue in 23.10)
Zen version: 1.0.1-a.5 (64-bit)

screenrecord-zenbrowser.mp4