An update: almost nobody pays for Photopea, and all my reports are from users who use it for free. I fixed over 3000 issues so far, some took minutes, others took weeks: https://github.com/photopea/photopea/issues?q=is%3Aissue+is%...

A "popular" issue is, that people use an extension, which renames files saved by Photopea to .TXT. It is reported several times a week and every time, I tell people to disable an extension. They often argue, that it can not be caused by an extension, or even lie, that they disabled it and it did not help.

https://github.com/photopea/photopea/issues/3246 https://github.com/photopea/photopea/issues/3227 https://github.com/photopea/photopea/issues/3194 https://github.com/photopea/photopea/issues/3187 https://github.com/photopea/photopea/issues/3116 https://github.com/photopea/photopea/issues/3110 https://github.com/photopea/photopea/issues/3049 and so on.