If you’ve had this problem it can be REALLY frustrating. Photoshop CS5 really needs to fix this – But at least after not too much wasted time I found the answer here:
My issue was solved after the second step:
Solution 2: Turn Font Preview off in Photoshop’s Preferences.
- Choose Photoshop > Preferences > Type (Mac OS), or Edit > Preferences > Type (Windows).
- Deselect Font Preview Size.
- Retest your issue to determine if this solution solved the problem.