Bugs afflict the player's Navi during network duel and generally has a negative effect. When the player's Navi is affected by a bug, their emotion window will flicker.
They can be caused in the following ways:
- A NaviCust part is placed in a way such that it does not follow NaviCust part placement rules.
- A mod card with negative effects is installed (Japanese version only).
- The Navi is hit by a chip or program advance (e.g.
MoonBld, 
ElcPuls3, 
BugBomb, 
DestPuls) that causes a certain bug.
Movement Bug
TODO
Custom Bug
TODO
Panel Bug
TODO
Encounter Bug
TODO
Result Bug
TODO
Buster Bug
TODO
Disabled
The disabled bug causes the bugged support program (i.e. Rush, Beat, or Tango) to have no effect.
Battle HP Bug
TODO
Damage HP Bug
TODO
Custom HP Bug
TODO
Custom Damage Bug
Patch Card exclusive. the custom damage bug causes a set amount of damage to be inflicted when entering the custom screen.
Color Bug
TODO