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The main page with the list of reports seems to encode the titles. For example, any apperance of the character ' is replaced with 's (in the html source, the & appears as &). In Dutch, translation of pages is pagina's, so it appears in almost every line. Alternatively you can also test with a " in the language file, which will show up as ".
After clicking on it, it is shown correctly in the <h3> title however, so the issue is clearly only in this overview list.
You can test it by placing a " anywhere under SideReport in the cms language file, for example in SideReport.EMPTYPAGES.
The same issue occurs for the title attribute for the CMS menu (Pages, Files, Security, Settings, ...).