Line not refreshed

[pebh]

Hi.
Using Firefox with Sierra-Dark-Solid theme on Manjaro Gnome.
There's a thin line below the bookmarks bar, that keeps the pixels from the window that was above Firefox.
This doesn't happen with other themes. To be honest, I didn't tried any other version...

See here

[vinceliuice]

That's the separators,

[pebh]

I don't mean the separators. It's the strange random pixels below the bookmarks bar!
I figured out that those pixels are the correspondent line from another window that was in front of Firefox. When I minimize the fore-window, that line remains in Firefox.

I just tried your "mojave-dark-solid" theme and it's fine!