Infinite Audio Analyzing

I’m using Cubase 8.0.10,
Windows 7 Ultimate
Intel i7 4790
8G RAM

I tried flattening out a clipping on a wave file with the pencil tool.
It’s a function you can use in the sample editor.
When I flatten out a part of the audio, Cubase starts analyzing audio infinitely. It just starts going crazy.
Please check the screenshot out below.
http://i.imgur.com/fFqUfw7.jpg

Any ideas?

Try with 8.0.20 and come back…