Layout mode looks good, browse mode not!
I think there must be something simple happening that I'm missing. I've got my layout all looking good but when I switch to Browse mode, the field(s) are a different size than in layout mode.
The offending field is an edit box with a scroll bar. I re-arranged my set up in layout mode to make sure nothing was hiding behind then put it all right again. I go back to browse mode, the edit box still is much bigger that it should be and now I also have a gap between fields that was not there before and doesn't show up in layout mode.