I just installed MiKTeX 2.9 and TeXstudio 2.9.4 on a relatively new Windows 8 machine.
Whenever I try to edit text, the cursor is about a tab away from the text. When I go back and edit text the position of the cursor is shown to be about a tab away from the location that edits are actually taking place. This makes editing very difficult.
I've used TeXstudio for a long time on other computers but have never seen this.