#50 Shulker placement from one-use eggs

Hi, After capturing a few Shulkers, it turned out placing them did not yield the expected result. Within a 5x3x5 glass dome, an End Stone was placed on the base (2 air blocks of room above), and releasing the Shulker from the egg on either the side or the top did not make the Shulker appear, but it did make the Safari Net disappear. No further console errors were shown. Plugin version: v1.15.14 Wonderful plugin, keep up the good work!