Please describe the problem:
When using keybindings with "Super"-Modifier, writing in the terminal is impossible.

Steps to reproduce:
1. Set action "New Tab" to Super+t 
2. Pressing key "T" without Modifier
3. 


Actual results:
new Tab is opened

Expected results:
write char 't' to the terminal

Does this happen every time?
yes

Other information:
Other keys with Super-Modifier have the same problem e.g. Super+C, Super+V, ...