OpenCL 18.1 Command Queue does not flush/finish/update.

We have attempted every tool from 17 to 19. None of them work as per the original 15. There seems to be something fundamentally broken in the openCL libraries as the command queues never flush or complete. This does not occur with our original v15 built tools. Due to Intel not providing the chips we need, we no longer have time to deal with a long winded minimal support solution. I will need real support for this, not hope that someone will get back to me on a forum.