I'm struggling with this, and have been able to recreate it in the same way as described. If I have a dropdown open and click onto another window and then click back into the Retool window (not onto the dropdown) then it bugs locked open, so you can repeat this with every dropdown visible to bug them all open. I have a video. Has anyone found a hack? I've tried a js hack to mass blur all inputs on focusing another, but it doesn't solve it.