Jaroslav
Well, I waited a bit longer than you did.
Restored the system from a REDO image backup (1/16/2018) managed to block KB4056892, then rechecked to insure KB4056892 was blocked.
Other updates were installed and then....................
KB4056892 attempted to install although it showed blocked.
Attempted to remove package with dism, however dism did NOT find that package.
You can't remove what isn't there.
Today I once again restored from REDO image backup (1/17/2018).
Blocked KB4056892.
Verified that KB4056892 showed as blocked.
Other updates installed after which.......
The still blocked KB4056892 downloaded and attempted to install yet again.
I guess that the timing is super critical.
I didn't know skeet shooting lessons were a Win-10 requirement.