Not sure if it was suggested before...(I did search though)

Might be an idea to have these search text entry fields in a more visible spot.

Currently at the bottom of the window when browsing a topic or forum. Newcomers may not know to look right at the bottom of the list. In a long thread, this becomes a little more relevant.

Suggestions:
1) At the top left. There are usually buttons for new topic or reply at top right... so top left may be obvious to the eye.

2) One of the options in the drop list (Forum Options / Options)

1

I agree. I myself just forgot where it is. :(

Agree.