For what’s worth new material layers are marked production-ready from 4.26, so you might encountered one of “beta bugs”… and it should get better in 4.26 
If that comforts you any way… 
For what’s worth new material layers are marked production-ready from 4.26, so you might encountered one of “beta bugs”… and it should get better in 4.26
If that comforts you any way…