Closed Captioning being cut off in SL360 (but not SL3)

Hi there. I have hit a real roadblock and am hoping you can help or direct me to where I can find an answer. I am working on a project in SL3. It is special size (485x799) to help it look great in portrait for mobile.

When the course is published in SL360 (the client has 360, I have SL3), the closed captions get cut off by the player. It looks great in SL3 though (screen shots below). I have spent hours googling this and can't seem to find an answer...can you please help?

SL3

SL360