Bug: Dom3 close itself when resolving battle

[Cipher]

here is the end of the log:
findbattlepath ret 1 (0 1)
pathfinding required from 29 13 to 38 13
findbattlepath ret 1 (0 1)
pathfinding required from 29 12 to 33 14
findbattlepath ret 1 (0 1)
10407 striking with weapon Paralyze. att18 def23
10407 striking with weapon Paralyze. att22 def31
Hirdman repells Dispossessed Spirit (Paralyze repelled with Broad Sword)
morale negated repell
attacker damaged by repell
hitloc Hirdman strikes Dispossessed Spirit wl2 diff-2 -> 2
damage 1 on Dispossessed Spirit, spec0x200000 ba2
Ethereal failed
10407 striking with weapon Paralyze. att16 def19