Thank you so much for playing! I'm happy you like it.
This is actually not a bug, but a design failure on my part, sorry! I didn't make it clear enough that both the blue character and the orange character need to go through the gate. From the screenshot I can tell that the blue character already activated the gate on the bottom, hence the orange character needs to activate the other one. This is a tricky situation though, but you can still get out of it :) So I should have made the colors more clear, and I should have prevented this situation from happening this early in the game.
Thanks a lot for the feedback, really appreciated!