This bug occurs when a chunk containing a barrel with Forestry bee drones (and potentially princesses) is unloaded and reloaded.
The barrel completely deletes the IsAnalyzed tag from the drone’s NBT data. This prevents freshly created drones, which have the tag, from stacking into the barrel.
This event also occurs in GT6 hoppers.
I found this on the Bears Den GT6 Adventure modpack, if that makes any difference.
Wait what? it ONLY deletes the analyzed Tag and none of the other Tags?!? Are you sure you analyzed those Bees properly, because this would be a way too big bug for me not to notice, especially with Hoppers.
I’m not analyzing the bees at all. When they’re analyzed the tag is added back, but I don’t analyze drones from my purebred automated alvearies because I already know the genome, and don’t need to waste the resources on analyzing them. The tag should still be there, and set to 0, but instead it’s being deleted completely. See attached pic.
AH now I know what you mean, this happens after unloading and reloading the Chunk, yeah I tend to delete unused NBT Tags when saving Data. Guess that needs to be a bit improved for stack-ability reasons.
Cool, I’ll keep that in mind for the future. Building from source is kind of a no-brainer for MC mods, but it’s nice to have prepacked builds sometimes.