Every time I open a document that I have previously worked on and I delete/add anything, the page shifts to the bottom of the screen. It's not a big deal but it's getting annoying having to fit to screen every time, especially when I'm working with a large amount of pages. Any ideas on how to fix this or is it a glitch?
You didn't say, but I'm guess that you're working on a Macintosh.
For a more "stable" interface, choose Window > Application Frame and view your windows within this frame.
Actually I'm working on a PC. Sorry forgot to mention.