Is there still a 24-hour tolerance for overstaying a visa at the airport in Thailand?

I had overstayed by 24 hours before Covid. They asked why and I explained. They waived the fee and let me go with no issues.

Actually in my case I had gotten a new visa, Non Imm O, but when I came in they stamped me on my Non Imm B that was expiring. I had to exit on the B, went to Singapore and came back on the correct Non Imm O.

It's really not a good idea to mess about with overstay stamps.

The rule has not been changed If I remember right..

If you leave within 24 hrs after your permitted-until-stay date passed, your overstay fine (500 thb) will be waived, just get an overstay stamp.