GitLab's diff or Code Review has an extremely annoying feature for people who fidget with text, especially when dragging text.

In addition to highlighting and "painting" the text, I often click and drag the highlighted text around. If some text is dragged onto the code view in Firefox, the dropped text seems to be treated like URLs, and opened either in new tabs or in the current tab.

https://gitlab.com/gitlab-org/gitlab/uploads/666d09080e20ea8...

If gitlab allows uploads by dropping files outside of the textarea, it might be a bug related to that (either in the browser or more likely in gitlab). This is standard for dragging urls or files into the browser from outside when the website isn't a drop target, afaik. You might be able to write a user script to disable it.

Alternatively, if you feel like rebuilding Firefox yourself, it looks like nsBaseDragService.cpp _might_ help you with preventing stuff from being dropped anywhere; I haven't read the whole file, but going by the name, overriding aCanDrop and mCanDrop to false might help. See lines 62, 84, 92. This _might_ allow you to continue dragging stuff around but disable dropping stuff.

[1]: https://searchfox.org/mozilla-central/source/widget/nsBaseDr...

I also thought I was the only one. To be fair, my text-painting is half readability enhancement and half fidgeting. I am kind of annoying in pair programming sessions.

I find it really hard to read large sections of text on a screen without the highlighted text play that somehow anchors my view (this is a largely subconscious process I think).

But yeah, my wife will go batshit when trying to read the same thing over my shoulder. "Just stop, I can't read when you do that"

The "New Email + Quote" thing gets me frequently, the quoted text below will just be some random section of text and I have to go back, deselect the text, and start a new email.