Oh yes, I was answering how to get a “On mouse button release” condition 
About your problem, this is due to the “Trigger once” condition, it doesn’t work when you switch between scenes (for the next scene, it’s the first time you press the mouse button, even if it is not), I’ve answered a similar question here:
[url]Menu problem! jump directly from moveset page to main menu? - #7 by Lizard-13]
You can put a timer as pleox suggests and as I think Umar did in the linked topic, so you have some time after the scene starts to move the cursor off the button. Easy but not complete, since you force the players to move the cursor just because.
Or you can force the player to don’t hold the mouse button at least one frame. This is the expected behavior, if you go to another scene and there is a new sprite button, you should release the mouse button and press it again over the new sprite button. This way is explained in the linked post