When I was typing a post, this overlay popped up when it tried to save the draft:
Then all my CSS went weird, as if it became stripped. The colours all turned white and background turned teal.
I refreshed the page and retyped my post and all seemed well.
But then when I was creating some new link forums in the Admin CP, the moment I clicked out of the Link URL field after entering the URL I wanted to redirect to, a similar pop-up appeared:
Again the CSS went weird again, half the text turned white. Ignoring it and clicking "Save Link Forum" worked fine. But it seems each time I click outside that site URL the same pop-up appears.
Does anyone have any ideas what might be causing this?