Empty comment field displays unnecessary "please fill out this field" tooltip when hovered over in Firefox #2349

As stated in the title, this tooltip appears when mousing over the comment field while it is empty. I know how issue comments work, I don't need this appearing and obscuring my text every time I go to write a comment. This is something which happens in normal GitHub, so I was hoping Refined GitHub would be able to fix it. I guess that makes this a feature request?

This only happens in Firefox as far as I can tell, which is possibly why it seems to have gone unnoticed. It's definitely a part of the site itself though, and not the browser: this message will appear in Chrome, but only when hovering over the issue title field, and not the comment field. In that case it's not really a problem though, since that's the default focused text box and the tooltip appears low enough that it doesn't cover the text anyway.

Here's a screenshot of the tooltip in question.