If an image uses float and the wrap text does not extend past image the JWplayer DIV will slide up even if the player can't fit in that space. The div then over overlaps image and caption or possible another video and prevents clicking them (links or buttons).
Only option seems to be adding lines or line breaks.
the div will also extend left or right if empty space though that less of a concern.
Anyway hopefully there is or will be a fix to keep div and wrapper and player together.