hovers do not work in microsoft edge

[jnweiger]

The standard windows 10 browser should be better supported. Someone please attach here a small PDF which demonstrates a working hover in edge.

@IVI053

References:

• http://www.adobe.com/devnet/pdf/pdf_reference.html
• https://msdn.microsoft.com/en-us/library/windows/desktop/bb760250%28v=vs.85%29.aspx says (in a different context): "Note that the tooltip must have text; if it has only title text, the tooltip does not display."