Input Textfield not working

I've got a handful of input textfields for a form, that break either after some typing, or sometimes not at all.

The default value text displays, but when you click into them to type nothing appears.

I've tried embedding fonts, making sure I use th Font class, even setting them to _sans and system font, but nothing. Totally at my ropes end before I wind up re-writing most of this thing.

These really should be TextInputs, I know, but this is some other f*cker's crap work I'm cleaning up and I don't feel like refactoring the rest of his garbage.

You need to give some information on that or post a sample fla with the problem.