Summary of bug here.
Killing a crusader at the last second before round change during a tie causes the crusader to not respawn next round due to a presumed respawn timer.
Tie the Round of little crusaders
Biting 1-2 seconds after the unit reward screen disappears during a round tie
The player will not respawn (Only tested with 2 players, meaning they became dragon next round)
The player respawning to reset the round
The player did not respawn on the new round