Bug#894340: bug 894340 still on Debian 11

[simone <njkjta@gmail.com>]

Hi,
Bug 894340 is still on a fresh install of Debian 11 when starting Konqueror from "favorite-tab" on menubar and from panel icon.
No problem launching Konqueror from "application-tab > Internet" on menubar.
Removing and adding again the konqueror icon on favorite tab and panel icon resolve the problem.

Konqueror 20.12.0
KDE Frameworks 5.78.0
Qt 5.15.2

Tanks.
Njkjta.