https://krikzz.com/forum/index.php?topic=1133.0 - This had to be fixed in the SD2SNES by krikzz originally. S-RTC was the cause, S-RTC was enabled all of the time on SD2SNES, but Krikzz changed it so S-RTC was only enabled depending upon cartridge detection after that, and it fixed the problem.
First reported by Hyper Space Squid --> https://misterfpga.org/viewtopic.php?f=18&t=3940
I tested for the possibility of a regression going back to releases from February of 2021, and it had the same result each time.
https://www.youtube.com/watch?v=ZK-Z-F_DvUc
https://krikzz.com/forum/index.php?topic=1133.0 - This had to be fixed in the SD2SNES by krikzz originally. S-RTC was the cause, S-RTC was enabled all of the time on SD2SNES, but Krikzz changed it so S-RTC was only enabled depending upon cartridge detection after that, and it fixed the problem.