After i got back from the nether to the Overworld, the shadows of the trees where much darker than before, and it only happened to specific trees of only one biome. I dont know exactly how to reproduce the problem, i was just playing normaly in my world with no addons, i got the the nether and when i was back, everything was black.
I tried putting blocks, breaking blocks, placing torches but the shadows continued darker.
Its not the biggest of the problems, but it is still a bug .
The quality of the video is not very good because i recorded it with the xbox gamebar thing, and quality of the video is not very good.