With a simple test, for me all is working OK.

Are you able to attach a sample for testing ?

Sure: Try to move the block in this drawing and snap to the block reference (located in the right lower triangle area)

Thanks, yes absolutely you are correct.

My simple test used a reference point on an easy intersection point.

I've just re-tested this using a reference point not on an end point or intersection etc.. and I get the same results, so I agree, this is a bug!

There's a bit of a dilemma here:
Previously, QCAD used to snap to the one reference point of a block reference when snapping ro reference points.
A bug was filed since users expected it to snap to reference points inside the block reference instead (e.g. the reference points of a circle that is part of the block).
So the behavior was changed.
Now it was changed again: future QCAD versions will snap to both internal reference points and the reference point of the block.

Great, sounds good ;)

Yep, sounds also good to me! ;-)