Found a bug. Mouse gesture 'Go to page top' is not working on some sites. Cent Settings page, for example 
And old issue with missing text on background pages, when DW is disabled appears again
It seems it happens only, when page is background for 15-30 minutes.
And old issue with missing text on background pages, when DW is disabled appears again
It seems it happens only, when page is background for 15-30 minutes.