Hello,
usually when I did hover the cursor over an icon in the icon-only-taskbar a small preview of the corresponding window appeared if the window is not minimized. But now in the preview appears only the big icon of the application, as if the window is minimized. Short info's are activated. I'm pretty sure a few days ago it still worked fine. Neon 5.25.
Has anybody an idea ?

screenshots will be really easy to understand the problem.

Also, are you using multiple display setup?

shawnp wrote:screenshots will be really easy to understand the problem.

https://postimg.cc/gallery/308crPg

While hovering the taskbar icons the previews are supposed to show a miniatur version of the window, not only a big icon of the application.

shawnp wrote:Also, are you using multiple display setup?

No multiple display.

Since the problem appears on two computers, may be it is a problem that came with the last updates ?

Is solved with the new updates to Qt 5.15.5 and Plasma 5.25.1

I confirm the same bug in VirtualBox machines (Debian stable+testing, Mint, LMDE, Kubuntu, KDE NEON). No windows previews in the taskbar for running apps.
Compositor settings:
https://i.postimg.cc/9FB6Bgcp/Screensho ... 223749.png

Bug screenshot:
https://postimg.cc/bsSxsFzn

Tried live-usb Neon, everything is ok...