System Information
Operating system: Linux-5.3.0-51-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GT 630/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.132
Blender Version
Broken: version: 2.90 (sub 2), branch: master, commit date: 2020-05-18 23:33, hash: rB7bd07c9f5adf
Short description of error
When i try to add a procedural noise into a bump node and then into a Principled BSDF, then the curve disappears. Only after i go into edit mode and back, it reappears.
Exact steps for others to reproduce the error
blendfile attached
