Some page titles in our Page title report are hierarchical and others are not. When we export this to excelsheet, we get leading whitespaces for all those pages which are not having hierarchy (looks like its trying to align with the + sign). Attaching a similar report.
The problem is that, if we sort page titles, it will not get sorted properly because of the leading whitespace. Please note extra whitespace in the rows 2, 3, 4 in attached screenshot
Attaching screenshot from piwik demo site as well, which also has this issue.