Let me in ver 3.4

When I do a inside thread parts of the thread with subtract I get 25 degrees of the thread being covered up with a bit of the inside surface and c

Let me in 3.4 beta

If I make a standard type if thread and do a subtract on the inside of the part it is ok it is only when I use the round thread that I had that problem

Hi, please can you attach images to help use better understand the issue?