multible keystrokes send to TV-Server

[hwd]

Hi folks,

I'm using TeamViewer 10 on Windows to connect to my Mac at home.
When I send a [ Tab ] to the server I get two of the strokes in the application I use.
Same behaviour with [ Ctrl ] + [ O ]. In MidnightCommander i can turn the panel off to switch fast on the console. When i press it again the panel shows up again.
In a TeamViewer-Session one press of this combination will turn the panel of and instandly on.

On Windows is TeamViewer 10.0.47484 and on Mac is 10.47374.

In the settings of TeamViewer I cant find anything what could point to that behaviour. Neither on Windows- nor Mac-Version.

Anyone know how i get rid of it?
Thank you!