Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 462.31
Broken: version: 3.0.0 Alpha
Short description of error
By deleting a node using "delete with reconnect" it is possible to have two links from one socket to a multi_input socket, which should not be possible.
Should be a very simple fix.
Exact steps for others to reproduce the error
Create a setup similar to this:
Use delete with reconnect (CTRL + X) on the "Curve to Mesh" node: