Using FF 3.7 I have found editing code characters are being added to the source. Sometimes just a small square, sometimes other characters. I've also seen just the word asciiz. Although I can't confirm 100%, the addition of the characters in the code isn't always where I've edited but in a different part of the file. I've also had characters added several places.
It is at the end of a function or method name after the closing paren (like the look up for a type, hence asciiz showing at times)
I have been able to delete the characters when the compiler complains. I haven't noticed them there when editing.
I usually won't post a bug until I can reproduce it, but this one has happened quite a few times and I can't figure what I've done to cause it. Maybe someone else has seen it.
I'll try to get a screen shot when it occurs again.
Thanks Brian - I have seen this happen on occassion as well (in the early days of FF3). Mostly small square characters. It seemed to happen randomly when I would do a CTRL+BACKSPACE to delete the preceeding word on a line. If you can isolate a repeatable test case then please send it to me. That would be great.
I've noticed it then too.
I also noticed a 0 (zero) being placed when I was using the down arrow to scroll down though the code.