System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce RTX 2060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 441.66

Blender Version
Broken: version: 2.82 (sub 6), branch: master, commit date: 2019-12-25 23:32, hash: rBfa5e28ab08c7
Worked: (optional)

Short description of error
In sculpt-mode, when I hide parts of mesh with Box Hide tool, undo that action and go into edit mode, the undo isn't synchronized but the edges that were hidden before undo in sculpt mode are not shown..

Exact steps for others to reproduce the error

1. Add a UV Sphere or any other mesh and go into sculpt mode.
2. Select the Box Hide tool and hide a part of the sphere.
3. Undo the action and go into edit mode.