Floating textboxes in title

I have several slides in a large course (SL2) where the title keeps floating up or down so either into the player or into the shapes or text below it. I am using a slide master to control the slide and I have checked the "resized the shape to fit text" marked for the textbox. 

The problem seems to occur after I share the file via dropbox but especially if I go from my desktop to my Lenovo tablet. It floats in the source file but also the published version. But not all 174 slides. Just a few stubborn ones and only some of the time. I'm a little concerned about sending it to the client because I don't know how it'll behave.

Thank you for your help!