Birch and oak trees don't grow up when tall grass is around the sapling

Please attach the crash report ([minecraft|http://hopper.minecraft.net/help/finding-minecraft-data-folder]/crash-reports/crash-<DATE>-client.txt), otherwise we can not diagnose this issue.
For technical support please use the Mojang Support Center.

-- I am a bot. This action was performed automagically!

Please put the description into the "Description" box rather than "Environment".

I can confirm this bug to be in Minecraft 19w42a (on the land)

There's a separate issue in 19w42a, which you're probably experiencing: MC-163403.

This issue was fixed in 1.16 pre-release 3