Cataclysm-dda: NPC ordered to construct blueprint can eventually switch to his/her long term goal and run away.

[eilaattwood]

Describe the bug

NPC ordered to construct blueprint can eventually switch to his/her long term goal and run away.
Usually that happens when they are interrupted.

Steps To Reproduce

Steps to reproduce the behavior:

1. Spawn NPC
2. Define construction blueprint zone and provide required tools and materials. Constructions should be time-consuming.
3. Order NPC to complete blueprint.
4. Wait until NPC interrupts building (for example, goes to bed)
5. Watch him run away after waking up.

Expected behavior

NPC returns to the activity before interrupt and stays on the base.

Screenshots

N/A

Versions and configuration

• OS: Windows 7
• Game Version: 0.D-4979-g6a0f1c8
• Graphics version: Tiles
• Mods loaded: [ "dda", "no_npc_food", "filthy_morale", "craftgp", "safeautodoc", "aftershock", "realguns", "More_Survival_Tools", "Medieval_Stuff", "makeshift", "modular_turrets", "Salvaged_Robots", "Mining_Mod", "mutant_npcs", "alt_map_key", "cityside", "more_locations", "FujiStruct", "Urban_Development", "boats", "blazemod", "deoxymod", "Tanks", "DP_REMIX_INDICATORS", "EngineeringEssentials", "StatsThroughSkills", "sleepdeprivation", "more_classes_scenarios", "manualbionicinstall" ]

Additional context

Save file from #31799 can be used to track down this problem.

[ghost]

This should be fixed by #31696 when it is merged. I've included the bugfix for this happening in there.

[sdp0et]

I've seen this from telling an NPC to follow after leaving them on guard duty for a while.