Missing icon for Mail Reader in application menu

[Vinzenz Vietzke]

Hi Paul,

Am 04.12.2017 um 15:29 schrieb Paul Menzel:
> But I believe, the “generic” “Mail Reader” icon is missing here somehow. 
> Could you please tell me, where this is configured. Adwaita 3.26.0 is 
> selected as the theme for Xfce.

what iconset is configured? And, does this problem persist with other 
iconsets as well?

vinz.