System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 457.30

Blender Version
Broken: version: 2.90.1, branch: master, commit date: 2020-09-23 06:43, hash: rB3e85bb34d0d7

Short description of error
Unable to select the vertex/edge of a model in edit mode.
It also causes issues as in not apply to any movement in the edit mode as in it's still hidden.

It also works with any model

Exact steps for others to reproduce the error
Select a vertex and hide it.
Go to sculpt mode
Go to edit mode
Unhide the vertex
Go back to sculpt mode
(Then it disappears)
Go to edit mode
(Can't Select vertex or edge)

Found fix:
After all that
In edit mode
Unhide hotkey
(Allowed to select it now)