I have a proposition for this :
If you can't solve the issue cause it's technically a nightmare, we can at least make this bug known for all the player.
Currently because it's not considered an exploit to use it on purpose, one player who knows about it can abuse it to get a win on someone who doesn't know. So instead of not talking about it to prevent too many people to know about it, I propose the opposite : we pin this thread somewhere visible, so new ladder players can know about it before launching into games. Maybe into a welcome guide for new player for example, between "hey come on discord", "here are the tutorials", you would have "known bugs you should know about", and of course "bannable exploits".
If you persist on not making this bug a bannable exploit, i think making it known is the best approach.
If all 1v1 ladder players would know about the issue, it will at least make it a little more fair, even if it will continue to be stupid and abusable. In order to not turn draw situations into a case of "who ctrl k first to victory", players could mutually agree to not use this bug, some sort of gentleman agreement.