Good news - It seems the problem you met is known and is under resolving by our development team. I have linked your request to related record in our tracking system. We will keep you updated.
Meantime there are 2 ways how to work around this: either leave empty paragraph between tables or merge tables in one. Here you can see code sample for these 2 ways.
This feature is now available in this .NET update and in this Java update. You can now avoid empty paragraphs in repeating regions in this version by setting RemoveEmptyParagraphs to true.