+1 Best Dev.
Honestly blown away by how addictive this is hahaha
I have found out exactly why this happens for you to simulate.
Start mucking a heading, before the muck is complete click on your bolter, click new task, bolt, then wait for the heading to be completely mucked out, then click on the heading to bolt it.
What I believe happens is when you click bolt it saves the state of everything on the screen for recognition of its state, when you click on a heading that wasn't completely mucked it registers as "I can't do that" when you press ESC to try again the game completely locks up and you lose everything.
Being patient and careful with my bolters I played last night for about 3-4 hours and had the top two levels completely developed without any issues until i experienced a completely different freeze glitch.
I hope this helps, honestly though with a saving/resume playing option this is hardly a problem that really needs addressing :)
When the bolter finishes a sequence of bolting and im active in its list it freezes my game 7x in a row.
The last time It happened was the exact same thing,
Using Bolter Clicked "Bolt" at the bottom of the screen, waiting for scoop to finish heading, clicked on the heading, "I cant do that", pressed ESC to refresh, FROZE
I run the game in the itch app and it is better but somehow the bolter is definately causing me crashes.
This is awesome, thanks for the update.
I was having a blast fully developed to the edge of the screen so I could stope from outside in "as we can't currently drive on backfilled Stopes for some reason"
Game froze and I lost everything, can you somehow let us download it and add a save game or auto save feature?
Very enjoyable and mate honestly the experience you have and have used in this is beautiful Respect!