Vanilla_Behavior_Pack_1.17.10 has Beehive recipe defined with

"result": [
{ "item": "minecraft:beehive" }
]

 

All other recipes have "result" as a single element, not a list/array:

e.g. (Good example)

"result":

{ "item": "minecraft:beacon" }

 

Proposed fix is to move the "item" element out of array markers, as proposed below:

  "result": 
{{    { "item": "minecraft:beehive" }}}