Blueprint nodes disappear on Mac OS Sierra (4.17)

Hi everyone,

I have recently installed UE 4.17 on my Imac 27 and new blocks in Blueprint Editor simply do not appear when I select the necessary ones in a pop-up menu (there is only a gold ball-like element appears).

The new block may not appear at all, once created, or may occasionally show up later.

Sometimes, if I delete a block, all of the blocks disappear.

Does anyone face the same problem on Mac OS?

Thanks in advance

The same problem