Chip & Dale take longer than Gadget to “glitch” into their regular size, but unless the battle is over in the first few seconds, they’re scaled properly with Gadget and Basil.
I’m sure PerBlue could work on a patch to have Chip & Dale show up in the correct size in their victory pose if the battle ends too quickly, but honestly I’d rather the team focus time and effort on other areas in the game.