If the nut is on tight then there should be no need for any type of glue. If an engine is in tune it doesn't back fire and throw the nuts or prop.
Never once seen an instruction manual from any manufacture say to use a glue on the crank? They do say tighten the nut though. A four stroke does come new in the box with a jam nut though and should be used for safety reasons. They do help but aren't a 100% cure all. It was a couple of years ago I had my last back fire from a four stroke, it was strong enough to toss both nuts and bend the aluminum spinner. It was on a freshly rebuilt YS 1.20 NC that is a bit different to tune then other engines, I had it just a bit on the lean side, my bad. The double nut helped. I only run one nut on most of my engines though but not until I have them dialed in. I have never seen any of the guys I fly with use glue on the crank, done correctly there just isn't any need for it.