It seems like Align to Baseline Grid is on for the text box.
Okay, I see what you were trying to show. Is your pasteboard actually getting bigger or is the screen just jumping to a place where it centers the active object?
The screen is jumping/re-centering to the active object. We place a lot of items into our publications, so the jumping is a hassle on a daily basis.
This is the only thing I can think of.
Go to System Preferences and click Accessibility
Now click on the Zoom Option. See keyboard shortcuts is turned on. If so, turn it off. Click More Options
Now check to see what option the mouse point has. It might have been set for recenter. If so, you need to figue out why you're going into a zoom mode.
Ugh...I was really hoping you were on to something.
No such luck. I unchecked the keyboard shortcuts and even tried each of the three options, but I still get the jump.
It's strange that no one else seems to have this issue, yet three of us here are dealing with it on different systems.
Thanks for the suggestion, tho.
OK, I looked around and there were some Apple users complaining that there was unwelcome movements on their screens since moving to Mavericks.
They said the 10.9.4 update fixed it.
Are you updated?
All up to date...
I did launch an older doc in CS6 and there's no jump issue, so maybe it's some weird mesh of CC and Mavericks.