Ubuntu 17.10 Gnome 3.24.2 - GeForce GTX 980 Ti/PCIe/SSE2
Broken: 2.79 RC hash:aa1b35bb60d
Short description of error
In the UV editor press CTRL+SHIFT+ALT+S (UVs/Transform/Shear);
After confirm the shear operation the "Operator" in the 3D view tab appears;
When you change the values of the operator in the 3D View tab
The shear changes to the 3D object instead of influence the UV that the operator came from...
Exact steps for others to reproduce the error
The description shows the steps and the .blend file is prepared enough.