It may also refer to a battle glitched in a different way, such as via the "wild appeared!" glitch.
Glitch battles may involve effects such as the following:
Corrupted battle music (see glitch audio) A forced glitch Trainer Corruption of the tiles on the screen A forced battle mode (possibly involving a glitch encounter system) Corrupted option cursor position/player may be prevented from moving the cursor to a certain option Corrupted Poké Ball rolls for the next Poké Ball Game freezes.