itch.io

Added that, along with some other tweaks and options - will be live in the next update but you can also grab the JS file for outline-view from

https://github.com/GameMakerDiscord/GMEdit/blob/master/bin/resources/app/plugins/outline-view/outline-view.js

and replace yours (at /resources/app/plugins/outline-view/outline-view.js) with a new one.