Check the paragraph style and the cell style of the cell where content doesn't appear. It might be the style applied to that cell which is making it invisible.
What am I supposed to check in the styles, in all pages, it works with the same styles and only resizing the bloc make everything appear again. There's no link with the styles...
I have the exact same problem. I can verify that it has nothing to do with paragraph styles or else. The frame content is simply invisible, following frame show content normally (or not, seems random). On any resize, the content gets visible again.
The developers of a plugin I am using are aware of this problem, too. (Easycatalog Plugin, 65bit.com)
Major bug I would say…
A .idml laundry helped… ;-)
Don't know if this is related at all but I'll pass it on. Just recently I was working on a table about 20-30 pages long and I couldn't make any changes to it after importing it because each time I tried to do something (like resize a column) the program would crash (CS6). I had a title and subtitle sitting at the top of the box followed by the table, all in the same frame and then flowing into subsequent pages. Long story short...removed the title and subtitle, placed them in their own box leaving the table in it's own box which continued to flow to subsequent pages. After removing the title and subtitle, I was able to edit the table in a normal fashion. It appeared that just having the couple of lines of text in the same frame as the table made a huge difference in InDesign's ability to handle a long table.