Strange graphical glitches on FF35 menu / Win7

[#1]

anyone encountered this? I can't figure it out.
Pic is from right-hand side of screen with the 'history' menu, but other options do similar things.
Also tried going back to FF 34, same.

[#2]

I've not seen that issue but since FF33 I have seen when clicking a new tab still shows the old tab as per pic.
The pic is from FF35.

[#3]

Hmm, does the same on the Mac.
Now seems like an issue delivering content from somewhere?
I've not had the tab not working. All else seems fine, though haven't really checked everything. I've only just noticed this menu glitch by chance. (Don't use the menu much.)

[#4]

Assuming you mean the fact that the menu moves off to the side to show the history submenu, I'm not sure it's a glitch, it looks like intentional behaviour.
If you click on anything on the left part of the original menu you're returned to the inital view.

[#5]

So it does! 
Looks a bit odd though, don't you think?
Didn't occur to me to click on the partially visible bit, just looks as though its rendered wrongly.
Thanks for that, all is well 

[#6]

Oops, I just clicked on the Menu icon when I checked earlier and didn't see what the OP saw.
Now I selected History and got the same. I agree it's intentional by the little white arrow in the blue box offering the option to go back to where you were.

[#7]

A new one on me just happened - check the tabs

[#8]

Oops!
Maybe you just have too many tabs open? Not sure what the limit is on FF, or if memory is an issue.