It happens on the feed on comments (I haven't tried editing a comment after I had edited it on my profile and it doesn't matter what kind of comment it is to), try editing a comment twice in a row; edit it then hit enter then try to edit it again that is where the comment turns out empty for some reason and only refreshing fixes it also I use Chrome on PC which hasn't changed.
Just commented on one of my posts and edited it once then tried to edit again and it shows up empty:
Comment > Edit > Try to Edit again, it's like I'm trying to edit again so fast Kitsu isn't able to save what was just edited.
If you try to post something here what you had will be lost:
Before you ask I even deactivated the Stylish Theme and the issue is still present.