In two separate worlds now, loading into the nether has no nether trees, crimson or warped. Check multiple biomes of each, and every later, no nether trees at all. Some vines and chunks of nether wart blocks, but no trees at all.
Environment
Windows 10, latest Java version, updated today.
Hey there!
Just to let you know, this issue has already been reported and is a duplicate of MC-203574