If this is the case then if one bot throws an error I'd expect all running bots to stop then too.
Assuming you're seeing the alert "RuneScape appears to have been closed or disconnected."
Yeah that's what it said and it said it twice even though one of them was still open.
Okay so i tried to recreate it locally by running two different bots and closing one runescape instance but that only stopped the bot that it's supposed to. I also tried running two of the same bot locally, same result as above. When i ran pi chopper from the bot store on both instances the issue was reproduced. Running two different bots from the bot store there was no issue. Running two maxiwoodcutters there was no issue. Tried with pi chopper but this time it didn't happen so it's not 100% reproducible.