https://bugs.kde.org/show_bug.cgi?id=380480

Plasma 5.10.0 introduced an issue which breaks existing Plasma themes. The issue was not present in 5.9.5.

The Plasma panel no longer renders, and its svg element appears to be ignored. However its contents do show, and the blur effect is present accordingly.

Below is a screenshot showing the issue, using my Plasma theme Freeze; The top part shows the panel displaying correctly, while the bottom shows it no longer rendering as the issue was introduced.

http://i.imgur.com/AFza7lv.png

The bug can be seen with the themes Freeze and Colorbit. You can get them both from here for testing:

https://www.opendesktop.org/p/998653/
https://www.opendesktop.org/p/998712/

I think I found the issue: Plasma 5.10.0 apparently changes the objects in the panel-background.svg element: Previously you had a set for each direction, such as #west-mini-center... now there's a single group for everything, such as #center.

I understand I need to update my Plasma themes in this case? Is it normal for compatibility to be broken with the old ones however?

Hi MirceaKitsune

The day before you did I asked the same question on this forum. And got no reactions too. Can you be more specific about your solution? I really would like to test it. Were do you find these " the objects in the panel-background.svg element"?
I see the svg-drawing with the name "panel-background" and I can open it with inkscape or kate. But what do I have to change to get the colors back?
I don't think that the whole north, south, east and west thing has been abandoned. Because only the color has disappeared. In all other hindsights these plasma-desktop themes work 100%.
Thanks.

begonia wrote:Hi MirceaKitsune

The day before you did I asked the same question on this forum. And got no reactions too. Can you be more specific about your solution? I really would like to test it. Were do you find these " the objects in the panel-background.svg element"?
I see the svg-drawing with the name "panel-background" and I can open it with inkscape or kate. But what do I have to change to get the colors back?
I don't think that the whole north, south, east and west thing has been abandoned. Because only the color has disappeared. In all other hindsights these plasma-desktop themes work 100%.
Thanks.

Hi. Please download the latest versions of the themes I linked in the first post. Compare the files "panel-background.svgz" (new panel definition) to "panel-background-old.svgz" (old panel definition). I have both for consistency, and looking at them explains how the elements have changed.

Thanks!