Studio playtest ALWAYS shift-locked camera

Can someone please tell me how to fix this? Everytime i playtest the game I’m permanently in something like shift lock and got no clue how to get rid of it or fix it. Sometimes it tells me to right click to go back to normal and it works but most of the times I’m just stuck like this and got no clue how to fix it.
https://gyazo.com/38a6ed2bbef8ab22ebdf593578f7c01b