Infinite Audio Analyzing

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

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.

Any ideas?

Try with 8.0.20 and come back…