Debug layout suddenly stopped working in all browsers

I can't click on "Debug layout" anymore. I've tried it in both Safari and Firefox, and it's not working in either browser.

I've tried clearing cookies, resetting the Ui, resetting the local storage and other basic troubleshooting steps, but none seem to work.

Is anyone having the same issue?

So apparently the issue is that Debug Layout has suddenly broken for my project specifically.

How do I fix this?

Follow the instructions below

Open ANY layout (main screen,thank you screen-any layout of your project

Then select "debug layout"

I've had this issue in the past. It was something related to one of the updates, but was then promptly fixed in the next.

When this happened to me, I went from Chrome to Internet Explorer and it fixed the issue. I'm back on Chrome now with no problems.