I'm sorry to hear you had a problem with it! Were you playing on the latest 0.19 patch? I made it so you could select or deselect with the mouse buttons as well as preventing keybinding the same buttons together! Either way I'll try and look into making the controls less confusing although I'm at a loss since succubus hunt used the same control scheme and I didn't receive any issue!
Oh, no, I was playing on 0.18 when that problem happened, but if the issue is resolved in the 0.19 patch than that's great.
Otherwise, I think the controls are confusing to me due to the fact this game has a different gameplay style than Succubus Hunt, which isn't a bad thing when I say that, but that's probably why I got confused when I first played the game on 0.18.