What type of bug are you reporting? Validator
What is the bug?
The validator does not recognize level 4 Staravia or Bibarel as legal in several formats. In older gens the validator says they need to be lvl 14 and 15 respectively to evolve, despite them being available in the wild at level 4 at Lake verity in Diamond and Pearl. In more recent generations where they can be obtained at that level via Pokemon GO, the validator will instead say their move is incompatible with their Pokemon GO origin if it has a move that it can't get from Pokemon GO. Tackle, for example. Though the move is legal on them at that level per their level up learn set and the fact they can be legally obtained as low as level 4 in Diamond and Pearl.
Are you able to replicate it? If so, how?
Go into Teambuilder and add a Staravia and Bibarel to your team, set their level to 4 and give them tackle and growl (both legal moves at that level for them) and Teambuilder will flag them as invalid (the only exception I can find is gen 9 natdex for Staravia).
What is the bug?
The validator does not recognize level 4 Staravia or Bibarel as legal in several formats. In older gens the validator says they need to be lvl 14 and 15 respectively to evolve, despite them being available in the wild at level 4 at Lake verity in Diamond and Pearl. In more recent generations where they can be obtained at that level via Pokemon GO, the validator will instead say their move is incompatible with their Pokemon GO origin if it has a move that it can't get from Pokemon GO. Tackle, for example. Though the move is legal on them at that level per their level up learn set and the fact they can be legally obtained as low as level 4 in Diamond and Pearl.
Are you able to replicate it? If so, how?
Go into Teambuilder and add a Staravia and Bibarel to your team, set their level to 4 and give them tackle and growl (both legal moves at that level for them) and Teambuilder will flag them as invalid (the only exception I can find is gen 9 natdex for Staravia).