Counter increases by itself

Hi. One of the counters increased by itself overnight.

I'm using multiple ways to keep count using multiple apps, and also screenshots.

According to my (biological) memory and my screenshot, one of the counters was at close to 3000 last night, but this morning it had increased by about 500 counts...

Please let me know if I can provide any other information.

System: Alpine Linux 3.22 with XFCE 4.20
Counters: Latest 1.20 from Flathub

Thanks.

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Update: This happened again twice today within a few hours.