#1 Do you Ctrl+Alt+N and Ctrl+Alt+X? These shortcuts are assigned to the tray icon. You can remove those shortcuts from the Tray icon. You can right-click on the Tray Icon, then select Customize Tray Icon and then you can remove shortcuts. I don’t know about Polish keyboards so you might need to explain if I didn’t answer your question correctly.
#2 I will work on improving these bookmark features in future versions. Thanks!