Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86
Broken: version: 2.81 (sub 1), branch: master, commit date: 2019-08-07 15:28, hash: rBdafecfa683a8
Short description of error
There is a missing overlay for the "root" of the skin modifier. Right now there is no way of telling where the root is and it is necessary to be aware of its position to fix the topology of the modifier result.
Here is a comparission between 2.79 (left) and 2.81 (right):
Ideally, and this goes more into feature requests, there should be an indicator for vertices marked as "loose" as well.