There are indications that some princes of the House of Saud are not happy with mini-Hariri or with the Hariri family in general. I usually don't link to MEMRI or to its sister website, Elaph. But this
article is indicative: Only Prince Salman seems to be keen on the Saudi sponsorship and support of Hariri family. It may have become a burden for the kingdom. (thanks Hisham)