There were some crashes for people with specific other software installed in 13.1, but those have all been fixed.
Not sure what the image or copying issues are, unless you mean copy progress dialogs not appearing, which is a problem caused by other software (which has been causing problems with Opus and other tools for years; see Conflicts with tools that move, on-top or modify other windows ).
You're unlikely to run into problems, but you can always reinstall Opus 12 if you need to. Just make a config backup in Opus 12 before installing 13 and you always have that option.
Note that the sub-Reddit isn't run by us and we don't monitor it. Don't know why anyone would go there rather than here, especially given how awful Reddit is to use generally these days.