After dry season was over and mild season began, I decided to go and explore inside the volcano. I spent one night inside of it and decided to return to my base. When I exited the volcano, I noticed it was pouring down really hard. Upon arriving at my base, I could see the world had a very green color to it, there was flooding, and saw the red bees spawning from a beebox indicating it was definitely monsoon season. It appears that entering the volcano has made me jump two seasons, and the days are also subtracted. I've also noticed my bootybag no longer drops dubloons after this bug has occurred.
TLDR;
-volcano reset my days and seasons
-was 3 or 4 days into mild season before entering volcano, and upon exiting, I was in monsoon season
-days are missing... went from day 167 to day 147
-only spent one full night inside the volcano
-previously visted and entered volcano before without any issues, so this was my second time going inside it
-bootybag no longer drops dubloons after this bug happened... I took the bootybag off inside the volcano and put it back on.. it's been days and no dubloons have dropped even though i've worn it consistently so the timer doesn't reset
-didn't notice until it was too late
-this save file didn't have another world linked/merged with it
Also, not sure if this is intended or not, but thermal stones will not stay icey cold for more than about 10 seconds. It seems broken.
1. A few days in mild season, enter the volcano and stay the night. 2. Exit volcano and days/seasons are reset or setback *Take bootybag off in volcano and put it back on, dubloons no longer drop.