Tools->Presentation Tool has no effect (TM 2.1, Windows 10)

Hi,
I’m on Texmacs 2.1, Windows 10.

I cannot make the ‘Presentation tool’ work: Switching on Tools->Presentation Tools sets the check sign, but in presentation mode, I cant find any dynamic menu and additional icons.
Any idea how to find/enable presentation tool, or what am I doing wrong? Any help is welcome.

Regards, Pcstor