Something is causing a memory leak in Firefox

[DuckOfDuckness]

I'm sorry that this is very vague, I have no idea what's actually causing this.

Right now when I open my feed in Firefox, it loads the page without any posts: Then Firefox's memory usage starts climbing continuously. At some point it manages to load the posts, but with no images/videos: And then finally the tab process crashes:

This has happened once before and stayed for a few days. My guess is that some type of post breaks Firefox, but I don't know what.

If I open the same feed in Chrome, it works fine.