[2020] Bug: Impossible to change banner icons

I wanted to change my banner icon, however, the UI is broken and I can't change my banner icon. I can change color just fine, but I can't open the icon menu at all and it always defaults to the first icon in the menu (in my case, a mushroom). I changed my icon a few weeks ago, so this must be relatively new.

I play on Switch.

Also, this is irrelvant to the Banner Brigade set cosmetics.