Forum page does not respect Back Button in Safari

I have noticed that when I view a Post and then hit the Back button, I am taken back to the last page I viewed before the forums.

I then have to hit the forward button to get back to the forums.

Hmmmm, it seems to work OK on my end (using Safari)

Works okay on mine too.

Grrr and now it is on mine. I should have added it does this inconsistently.