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Imps stuck trying to go through reinforced corner (stable)
Load the attached save from KeeperFX v0.4.6 r1735 patch, git dd72690, dated 2015-11-04 00:04:05 (stable) and notice all imps are idle except for 3. Also notice a single patch of dirt wall waiting to be reinforced. The 3 imps are trying to make their way through reinforced corners, but can't.
Packetfile is also attached, but that goes out of sync in a strange way. Rooms I build fully are only partially constructed in the packetfile.
Fixed the never-reinforced-slab issue, for stuck imps - we need some kind of mechanism which would reset creatures who are not moving for some time, this is more complex.
Ok, stuck creatures happen on multiple ways. There's still the bile demon who can't pass though hallways, issues with room pillars trapping creatures, creatures stuck in locked doors or at wrong elevation. And also stuff like from the attached save where you'll find an army trying to follow the CTA flag through a door.
Perhaps all these kind of issues can be solved by a single solution, but some of the cases movement is limited and back and forth, but non-zero.
Ran into another example of creatures getting stuck. Have the save and packetfile that shows it. From KeeperFX v0.4.6 r1743 patch, git 6afe640, dated 2015-11-08 21:20:01.
I played it on this map., but modified the script to make the map work: 
Another situation that annoyed me. All my warlocks died from starvation on the dungeon heart.
