* Launch Factorio (consistent since Space Age, but I'm currently on 2.0.14)
* Switch to another (non-Factorio) app (ex: Finder)
* Without logging out, switch to a 2nd user (I have my "work" user and my "play" user; switching to do some quick paperwork then return to play is my common scenario)
* Switch back to original user,; return to Factorio
EXPECTED: Factorio continues as normal (possibly auto-paused; that would not be terrible)
ACTUAL: Factorio hangs -- goes in to "NOT RESPONDING" mode and must be forced-quit in order to continue.
100% reproducable (by me
)