[GAMEPLAY] On ARAM, using the "Undo" feature of the shop removes champion health

This bug occurred in the mode ARAM where after canceling a purchase in the shop by using the "Undo" button, the champion loses a portion of their health. As this was on the Howling Abyss where health is not restored when standing in the fountain, this leaves the champion having to resume the battle missing a portion of their total health.

I have tried to create and document the bug since then but I have not been able to myself outside of this time. In this game, I had already bought the Lost Chapter.