Why does my edit screen suddenly have such a buggy interface?

Question

I've attached an image link to show how WordPress displays my Post Edit screen.

Most of the time the Post Edit screen is displayed normally, but sometimes it rendered in this old, buggy way. I'm wondering if this is happening due to a plugin compatibility issue.

Answer 1

Next time it goes like this, open up Inspect Element and check the console for errors. I'm assuming it's missing the stylesheet, but as a debug step look for the actual error first.

Then the old disable all plugins and see if you can replicate the issue.