[BUG] A different background of elements on the panel.

[tires3]

Hello! I ran into the following problem: the background of the elements on the panel is different, in other words, they are not transparent, although in the panel settings I select "solid color" and twist the transparency to the maximum. (see screenshot 1)

If you choose a different color, for example, purple, the situation not only does not change, but also becomes worse (see screenshot 2).

I attach the characteristics of my system (see screenshot 3).