Task Manager obscuring browser buttons - how do I fix this please?

I work in two locations and usually with the same applications and settings on each machine but one is running TW + KDE, the other Leap 15.5 +KDE.

Recently I have had an issue with the machine which is running TW with KDE desktop because the Task Manager window which I have at the bottom of the screen, hides the bottom of the browser and more importantly sometimes hides button shown in the browser. This only happens on the one machine. The other has all the browser window above the Task Manager.

How may I fix this please?

Right click on the taskbar, click on “Enter Edit Mode” >> “More Options…”, change the ‘Visibility’ settings as you prefer eg “Windows Can Cover”

Brilliant and many thanks once again.
Seasons’ greetings,