SDK hammer bug

Hello i got a problem when i move around in the camera window it zooms in and out i want to make it that it is zoomed out the whole time as i can’t build my own map with this bug :L i tried: reseting my Hammer i tried validating files i tried running all source games i own atleast more then once so im quite out of options could anyone help me here? :wink:

EDIT: this is the problem i keep having https://www.youtube.com/watch?v=NwuAJtTD23U

can realy noone help me ? :L

There are a few solutions here:
http://forums.tf2maps.net/archive/index.php/t-7575.html

tried all of them none worked ty tough :l