Discord later banned the account for violating the TOS when lying about her age and stated they would only restore the account if they shared a photo of the kid along with a copy of her birth certificate or passport. The father gave in and complied so she didn’t loose access to her friends.

This is valid on Discord’s part. The father should have helped her to make a new account instead of giving away records if he’s really insistent on letting his kid have Discord. Also, “loose”

Sounds like it might be more of a DE problem than a distro problem. I’d recommend trying KDE Plasma if you haven’t already.