System Information
Ubuntu 17.10
GeForce GTX 660
Blender Version
2.79a
Short description of error
With Blender 2.79a using the hard cut (Sh+K) in a movie clip is not working correctly. The right side of clip, after the hard cut, has a different "dimmed" color and if you try to play the clip (Alt+A) after the cut, there is a frozen image.
I downloaded and installed Blender 2.79 and the problem disappeared. So this bug was introduced in Blender 2.79a.
Exact steps for others to reproduce the error
Select movie clip
Sh+K
Play clip through the cut (Alt+A)