[Bug Report ID: #2127332224] Improper "Place the Explosives" prompt on entering any combat area

After unlocking Plunder's Point in Act 4 and speaking to Dannig to advance the Expedition mechanic introductory quest, then teleporting back out without placing any explosives, the game shows a "Place the Explosives" prompt on entering any combat map (i.e. not towns), even one in a completely different Act.