Crash when finishing custom map during testing mode

Consistent:

every time I try to complete my custom mission by having a unit (that starts imprisoned) return to base, it crashes when it should finish. This is using the new scripting function, i.e when unit (condition: the imprisoned unit is specified) is near a block next to dungeon core, finish level. And it consistently crashes. 

rescue party_edit_76561198011448163
rescue party_edit_76561198011448163.meta

rescue party_20180421172553
rescue party_20180421172553.meta

Posted three bug reports, but they're all for the same bug, on the off chance more helps.

crash.dmperror.logoutput_log.txt

crash.dmperror.logoutput_log.txt

3 crash.dmp output_log.txterror.log