System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: Gallium 0.4 on llvmpipe (LLVM 3.8, 256 bits) VMware, Inc. 3.3 (Core Profile) Mesa 11.2.0 (git-aa91c51)

Blender Version
Broken: version: 2.93.4, branch: master, commit date: 2021-08-31 09:23, hash: rBb7205031cec4
Worked: (newest version of Blender that worked as expected)

Short description of error
Nodes connector in shader mode cannot be seen

Exact steps for others to reproduce the error

click on one of the nodes, extend the connector

connect the connector to another node

connector that is connected to another node cannot be seen

[Based on the default startup or an attached .blend file (as simple as possible)]