Jungle Edge is created when a Jungle borders Taiga and Forest variants and all Birch Forest, Dark forest and Snowy Taiga biomes

Jungle edge generates even though it shouldn't generate:

Generates next to Birch Forests and Dark forests; this might be intended, but I think that those biomes are very similar and should have same rules for world generation(except mansions). I am reporting this, because MC-169833 is not resolved as Invalid and it has very similar description as is this.

It also generates right next to Forest and Taiga variants- I doubt that this is intended

It generates next to Snowy Taiga. If this is a Taiga-ish biome, I think that this shouldn't be intended either  (MC-166590 was valid and had very similar description)