just as an update for people living on phuket.....
I have now confirmation of some long stay foreigners try doing their 90 day report and have been out of the country for a trip, have to register in 24 hours after that trip !. If not you have to pay a fine 1600 thb! and do a new register before the 90 days report.
All this happened in Patong immigration office!
TLDR : Answer Summary
Recent updates from the Patong Immigration Office in Phuket indicate that long-stay foreigners must complete their 90-day report within 24 hours of re-entering the country after a trip. Failure to comply results in a fine of 1600 THB, along with having to register anew before the next 90-day report. Discussions reveal confusion between the 90-day reporting and TM30 notification requirements, with many emphasizing that these rules, although longstanding, are now being enforced more strictly.