The above is what I got when I tried to use the Quote button to reply. I logged out and then logged back in. It didn't help.
For what it is worth, the "Insert Quote" button has never worked for me either. But now the Quote button is giving me a problem.
Okay, now I see exactly what you're referring to. The normal function of SMF is to only show the reply to which you are quoting, rather than "tile" all the previous quotes in succession. Again, not sure how the tiling effect entered into this forum but it must have been switched on by a site administrator, other SMF forums do not tile or stack replies and quotes in succession.
I myself often remove the extra replies when I'm replying to a post, it becomes very difficult to navigate in the busier threads and they quickly become umpteen pages long due to mile long posts for a one word reply. Perhaps admin or Bob disabled the stacking to save some bandwidth
Anyhow, nothing wrong at your end, it's just the way the forum is running now unless admin or Bob had meant for the stacking feature to be enabled and hasn't fixed it yet.