In conquest, if a person moves their hero onto the tile that they are also the tower guard, and that tile comes under attack, they cannot attack with both their hero and tower guard. If not, they should at least be able to move their hero off that tile in order to attack or scout somewhere else.
This is intended, in the future try not to be blocked on your own tower.
I made the same mistake as you
I think Flare must disable option to click attack button on tower where you are tower guard when you are moving with your “attacking pawn”
So flare did this on purpose. I can see you might not want to have a hero defend a tile 2x but is that really any different than defending 2 different tiles at once?
Anyway, the real kicker is not being able to move off the tile. That better not be an intended play on flare’s part.