Lanterns should behave as double blocks, like the rose plants do.

I've tried combining lanterns with columns on top and I really don't see the appeal.
The fluted, doric, and segmented columns even cause graphical flickering errors when stacked upon the lanterns. I'm also getting glitchy flickering with the segmented posts and stele.
...and the Tetrapylons flicker too.
So far only the pedestals don't flicker. Looks like fountains don't flicker either.
Every normal block I test flickers on top of the lantern.

The feature is intended because at the same way the lanterns can be combined with some of the columns blending on upper half to make other shapes for free.

I told that were only some of the columns. Two reasonably acceptable matches are more than fine for me to call it an additional chance, This blend was not designed by plan but randomly happened, so I pandered it, not looking for appeal, Will consider eventually stitching the flickering when I can.
In any case, the lantern is still a big and wide block, going off the bounding box of a normal block, so it is supposed to be placed on its own to decorate an open area. I don't see many other applications for it, so trying to exploit the bug with random blocks is just forcing it to bug.

For now I close this issue and appoint some fixes for it,