Is tinyMCE meant to be compatible with jQuery Mobile? What does the author say about that? Have you checked to see if others have successfully used tinyMCE in a jQuery Mobile project?
I would never assume that any random Javascript is compatible with jQuery Mobile. In fact, unless stated so by the author, I would assume that it is not compatible.
if we can hard code the table before the editor is load
I have no idea what you are talking about here. What table? You've given us almost no information.
https://forum.jquery.com/topic/how-to-ask-for-jquery-mobile-help