Crops the bottom of the windows when it's in panel mode:

With panel mode off it's normal:

Dash-to-dock version: 69
Distro: Pop OS 20.04
Gnome: 3.36.4
(Single monitor)
Same here, however, in my case, the gap is on the right.
Screenshot:

Distro: Arch Linux
Dash to Dock: v69
Gnome Shell: 3.38.1
This is caused by commit 3610a0882f41276c1e4c41c107ef21d4d4122df1.
I have the same issue.
Same issue here.
Same issue here

Most helpful comment
Same here, however, in my case, the gap is on the right.
Screenshot:

Distro: Arch Linux
Dash to Dock: v69
Gnome Shell: 3.38.1