In the past I never had trouble growing giant 2x2 jungle trees anywhere.
Recently I joined a server, went to a snow-covered biome (and a flower forest biome too) and the 2x2 jungle trees would not grow, not even with bonemeal. (I noticed more biome depencies with trees, for example Birch would not grow in snow biome but grew on the flower forest).
Admins said they don't have any plugins that modify tree behavior. I also have not found any notes of biome specificity for trees in recent vanilla versions.
Any idea of what is going on? Better yet, any idea of how to make them grow?