I fought a battle with Valkia against 2 armies on the ocean (belakor and one of his other lords). I won but afterwards my lord has been stuck in the same position on the campaign map not able to move. It doesn't matter if I reload or end turn I am always stuck. There is an enemy hero who was damaged but managed to retreat who is still showing on the same square as me but without an army. I think what happened was that I destroyed the armies but one hero escaped but without an army the hero became on the campaign map as opposed to embedded into an army and is on the same square as me so we're both not able to move.

Playing on patch 5.1.0 vanilla no mods.