Language tool is incorrectly offering changes

This has happened quite a few times now, where I have tried to write down something in a website, but the Language tool has offered a change, so that there is an extra comma where it isn’t needed, or an uppercase letter for a word that doesn’t need one. It can be quite annoying when you are writing an important work email, or for my friend’s children when they are told off for having incorrect grammar in school, so please do try to fix this.
But other than that issue, Language tool is quite a handy extension to have and I would recommend it to most people. Despite the fact that it has a few issues here and there, the extension works really well.

Could you provide some specific examples?