As the title says the current InfinityLib causes a ALREADY CONSTRUCTING VERTICALS Crash.
Confirmed that InfinityLib is causing this !
Please Do Fix This As This Is actually the only Lib Version available and Agricraft is the only Mod in my modpack depending on infinity lib.

And here is a crash report to support it: https://pastebin.com/7y5MP2c3

Still Requesting A Fix
Also Newer JEI Versions arent able to handle this issue

Another crash: https://pastebin.pl/view/35730c6a

Closing since I am moving to 1.16 where this is no longer relevant.