Warped and Crimson Nylium require Silk Touch in order for the blocks to drop themselves, but this is not shown. WailaHaervestability Version 1.1.13, using Minecraft 1.16.5.

This was a change made in 20w22a, so it's been the case for all Minecraft 1.16 versions.

Silk Touch information was removed from this mod when it was ported to 1.14+, because we couldn't find a good way of getting that information in the more recent versions of Minecraft.