6.x-3.5 & 6.x-3.4 erase textfield data attached to images

I'm using filefield/imagefield and the Title field to attach text to uploaded images. Everything was working before the upgrade, and after the upgrade things seems to be ok.
But the client contacted me and said that the text was being erased after they edited nodes.

After messing around with it a bit, I decided to downgrade back to 6.x-3.3 and everything works again.

Not sure what the problem is, but I'm guessing that the new code isn't accessing the database properly in edit mode, so the text seems to disappear.
I can save new text, but editing it again will make it disappear.