I don't know if there's any meaningful point in bug reporting when a new demo is coming out Soon™, but my game on 20 08 2020 is crashing when I attempt to save.
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FATAL ERROR in
action number 1
of Other Event: User Defined 0
for object obj_ExplorationController:
DoSub :1: undefined value
at gml_Script_slowdown_target
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stack frame is
gml_Script_slowdown_target (line 0)
gml_Object_obj_ExplorationController_Other_10
And now it's crashing on load attempt, so I can't play.