Saving settings seems to be working fine. World hopping is working fine for me but if you are getting the message to confirm you want to hop worlds due to OSRS currently restricting again you will need to manually go through the dialog and select do not warn me again, after that the popup should be gone forever.
As for the mirror mode issue, the bug does not appear to be occurring for me at all during debugging now. I did add a ton of logging to the attacking portion of the bot since it seemed that's where the issue occurs. I pushed version 9.7 which will provide much more descriptive information in the logger during the attack phase. If anyone has the issue reoccur after 9.7 is live please post a copy of the logger as it should be much more helpful for debugging now. I will of course continue to run the script in mirror mode and attempt to replicate the bug again.