This is reproducible using the Interactivity demo located at developer.xamarin.com/samples/xamarin-forms/UserInterface/ListView/interactivity/
Once you click on the ContextAction, the ListViewItem is no longer selectable or tappable.
Already reported. Here it is if anyone cares. github.com/xamarin/Xamarin.Forms/issues/4987
Great - seems to be flip-flopping in and out of milestones, so not sure when it will be fixed though.
Contextaction's are a basket case, have been for ages. Long ago give them up for overflow menus, longpress popop menus. Not platform specific but at least it works consistently in UWP/OS/Droid when you use Rg.Plugins
Xamarin Inc., as a wholly-owned Microsoft subsidiary acting as a separate legal entity, adheres to the Microsoft Privacy Statement: Privacy & cookies