crashlog: https://gist.github.com/Birgliss/f7756a193ed6273467e7fc1541df9a74
mod versions:
Bamboozled 1.12-1.10
Mystical Lib 1.12.2-1.3.7
Roots 1.12.2-3.0.12
Mystical World 1.12.2-1.4.4
Forge 14.23.5.2846
full modlist: the above but also
Patchouli 1.0-20

crash:
after loading in world, minecraft will crash if bamboo has a growth-tick

repro:
acquire staff with growth infusion spell
use spell
aim at bamboo
or;
place bamboo
wait for growth tick

i've notified the roots 3 devs and they're investigating it currently
however i was told that the issue could be on bamboozled's side so i'm making an issue here

This will be resolved in the upcoming 3.0.0 update which I will hopefully have released sometime over Christmas / the beginning of the new year. ^^ Apologies for leaving the mod with this bug for so long.

Is this still an issue as of release 1.0.10?

this is still an issue. as of the latest versions for both Roots and Bamboozled.

it looks like whatever roots does to the growing mechanics is conflicting with bamboozled's bamboo growth mechanics