I'm fond of using the 'install this site as an app' functionality in Edge (and presumably Chrome!) When I do so, the icon on the taskbar usually appears when I launch the web-app, but as soon as I interact with the window in any way, the icon goes blank on the taskbar. This does not happen when i disable Start11s enhanced taskbar, and has been a problem for as long as I can remember using Start11. Problem exists in Start11v2 as well.
on launch
on clicking anywhere in the window.
That's pinning Microsoft Loop - same when I pin Snapchat, Microsoft Planner, Pocket, anything.