More odd behaviour

According to my changes tracker:

But, visiting the post 9 hours later:
There is evidence that all is not well at first glance (and note ‘comments present’):

I have noticed that the site is a little more erratic at the moment. Is this an early indication of forthcoming problems.

I had a momentary glitch this morning in the changes tracker but when I revisited it, it was OK.

Just now, I got a message saying ‘something has gone very wrong, please clear your browser cache…’
I reloaded the page and it worked - except that I couldn’t see any pictures; and the ‘changes tracker’ didn’t load. I think we’ve been here before?