Setting your security slider to "high" breaks Twitter
I just realized twitter doesn't load properly when the security slider is set to "high". I was trying to figure out what triggers this but I also realized there's no apparent way to find out what things were blocked by the security slider. Addons like NoScript, Privacy Badger or any ad blocker basically have this option where they show you what elements were blocked so you could investigate if there's a problem and manually whitelist them, but I find out it's not as easy with the security slider.
Attached is a screenshot of how it looks.
The workaround is to lower the security to medium.