The modID for Bamboo Blocks has changed so the bamboo torch isn't recognized by the TorchSlab mod. The new ID is in the screenshot below:

Relevant section of the log: Log

Currently the comparability for Bamboo Blocks was disabled since it wasn't out when I did the initial 1.16 port. Though I see it's been out for a week and a half now. So I will probably get on that sooner than later.