Had pursuit activate on the field even if the pokemon that used it wasnt in the field
How to replicate:
Turn 1
Opponent swaps, User pursuits
Turn 2
User swaps, opponent can click any move
Turn 3
Opponent swaps, User clicks any move, pursuit activates on mon thats on the field, move hits the thing thats swapping
Bug has been present since pixelmon 9.1.0

Hello SparkyManectric!

In order to test this, I battled with a player and set it up in the following manner:
Turn 1: A uses Pursuit, B switches out
Turn 2: A switches out, B attacks
Turn 3: A attacks, B switches out

Upon B switching out in turn 3, their Pokemon did indeed take Pursuit damage from A's pursuit user, even though they weren't even out on the field.

Thank you for reporting this! I have moved it to internal =)