Bard songs vs. Keep gates

I just realised today and i`m sure this is not intended. While playing my bard i noticed i can't enter a keep while i`m playing any song, i have to wait to finish it to be able to enter a keep. When i right-click on a gatekeep while playing a song trying to enter/exit i get this message "Wait until your spellcasting finish".

Please fix this, thank you!