Writing cursor sometimes switches to selector in reply box.

[NBP81]

Not sure how to explain this correctly, but sometimes the writing cursor in the reply box switches to another mode wits not a bar anymore but a small box highlighting a single letter. When that happens, if I try to go back in the text to correct something, what I write now overwrites the following characters instead of pushing them back. This only happens here but Im not sure if its on my end or on FH's side? This this a key a strike accidently that switches it to anoter mode or something? @Wildbill3

 

[uk_dolfan]

My PC does that sometimes, really annoys me. (not on FH, just generally) sometimes pressing insert fixes it

 

[NY8123]

I have never seen or had this problem........odd to say the least.