[Low folders still deleted when Index.dat files cleaned]

When CCleaner is used to clean Index.dat files, the following folders are unnecessarily deleted after reboot:

 

.....\History\History.IE5

.....\Temporary Internet Files\Low

.....\Temporary Internet Files\Low\Content.IE5

 

but the other Low folders, and the other History.IE5 and Content.IE5 folders, are not deleted.

 

Is this behaviour intentional?

 

I am using the latest version of CCleaner (2.08.588).