On fabric, byg 1.1.7 (latest to my knowledge for fabric.)
fabric 0.11.1

blocks this entails exactly: vermilion sculk, sythian nylium, ivis phylium, nightshade phylium, shulkren phylium, ether phylium, and bulbis phycelium, and also overgrown netherrack,

none of these blocks spread through any means, bonemeal or otherwise

everything except sythian nylium and overgrown netherrack is missing the table for what generates when you bone meal it

to reproduce try to spread it to its proper block via bone meal like nylium as you normaly would

them to spread from bone meal
and to have things like say shulkren fungus to appear when you bone meal the respective block.

video of said stuff not working
image of the spreadables and non spreadables

will provide if needed but seeing as there is no information gained from them (I've looked there is nothing except it wining about the boats) i dont feel as its needed in this exact case

extra notes: i saw a bug report similar to this for forge that was labeled "minor" but seeing as this is a bug that if it was in base game would be patched by either the next snapshot or even in a next day patch (b snapshot) i feel its kind of major. Along side that it directly effects game-play in a semi significant way. Granted not for every player is going to run into this issue as some are just not gonna want more of the end woods and are just going to go about their day destroying a small amount of area for the items. But a large percentage will more than likely come prepared to bone meal the ground there, or take it back to base to make a farm even. Because of this I feel it deserves being pushed to the top rather than more content or content tweaks. Quantity over quality. Along with all this the fact of there being 5 spreadables working and the rest all broken, (13 total meaning 8 are broken) is to put it lightly, not very good on QA's part....
I'm very sorry if this somehow came off as rude but I just feel annoyed that all of these are somehow broken in a release state of the mod. Anyway have a wonderful day and happy modding!