Some (?  only one so far) end cities are generating in ways that look weirdly corrupt (screenshot attached).  These are completely newly generated chunks in vanilla 1.16.1 (server), with vanilla 1.16.1 client.  The server was upgraded from 1.15.2, and 1.14.4 before that (just in case something about generation is inherited).

As you can see in the image, a section of a structure has generated on the top of another structure that should have nothing on top of it (at the very least the top structure should probably have a floor).