Background color of certain tooltips is solid black after upgrading yaru-theme-gkt to version 20.04.10.1

[Duke]

1) Ubuntu version: Ubuntu 20.04.1 LTS

2) Package version: yaru-theme-gtk version 20.04.10.1

For example when hovering over an item in the left panel of Gnome Files, a tooltip is displayed.

When yaru-theme-gtk version 20.04.6 is installed, the background color of the tooltip is dark grey with some transparency (similar to the color of the tooltips that are displayed when hovering over an icon in the Ubuntu Dock for example).

After upgrading yaru-theme-gtk to version 20.04.10.1, the background color of the tooltip is solid black (and the tooltip box is higher).

See the attached screenshot: on the left the result when yaru-theme-gtk version 20.04.6 is installed (the expected result), on the right when yaru-theme-gtk version 20.04.10.1 is installed (the actual result).

3) Expected result: the background color of the tooltips should be dark grey, with some transparency, like elsewhere.

4) Actual result: the background color of the tooltips is solid black.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Frederik Feichtmeier (feichtmeier)]

Hi there, yes this happens on focal.
I didn't find the reason though, because we did not change the tooltip from 20.04 to 20.10

Also, in 20.10 this does not happen anymore:
(see screenshot)

[Amr Ibrahim (amribrahim1987)]

Yes, I confirm this in Focal. The tooltips in GTK3 apps (nautilus, evolution, gnome-system-monitor) have a solid black background now.