Operating system: Windows 10
Graphics card: Nvidia Geforce GTX 1050 Ti
Short description of error
"Compare UVs" option of Tris to Quads does not stop UV map from breaking after applying it.
Exact steps for others to reproduce the error
Press Space, then select Tris to Quads, check "Compare UVs" and you'll see that UV Map will break.
Blend file is attached.