Operating system: Linux-4.15.0-54-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.116
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-18 14:52, hash: rB38d4483c6a51
Short description of error
Ctrl+Z does not restore deleted node in shader editor
Exact steps for others to reproduce the error
Following this tutorial https://www.youtube.com/watch?v=0zrd37k2tJM&list=PLa1F2ddGya_-UvuAqHAksYnB0qL9yWDO6&index=17
I've deleted the MixRGB node, then wanted it to be back by pressing CTRL+Z, but it's not restoring the node, I also tried with other nodes, same result.
I noticed that when I press CTRL+Z the 3D viewport is switching to wireframe mode which is done because of the Z key, maybe it's related to the bug ?