System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1080 with Max-Q Design/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 451.67
Short description of error
When an object has a negative scale value, it will report the dimensions correctly but setting the dimensions becomes impossible for the negative scaled axis
Exact steps for others to reproduce the error
Add a negative scale to an object
Play around with the dimension values in the transform panel
It's a GIF, click to see animation