What happened?

Stalagnates can generate without support, as a result there will be forest like this:

BetterNether

7.0.2

BCLib

2.0.5

Fabric API

0.56.0

Fabric Loader

0.14.8

Minecraft

1.19

Relevant log output

No errors in log

Other Mods

better-end-2.0.2
iris-mc1.19-1.2.5
sodium-fabric-mc1.19-0.4.2+build.16

Additional screen - they can also generate up to lava

Should be fixed in the just release 7.0.3 update.