I hope I'm posting this in the correct location...
I'm seeing an odd behavior in my Web Appbuilder applications in Portal 10.6.1.
When clicking on a feature that has pop-ups enabled, the selection outline is off. Way off. Not just shifted, but inaccurately drawn (see image below: the selection should follow the red parcel boundary). It only occurs at large scales. When I zoom out (beyond about 1:2400), it renders the selection correctly.
This is happening for all layers with pop-ups, in all Web Appbuilder applications. These are dynamically rendered vector layers, not cached.
As far as I know it's new behavior since we upgraded from 10.5.1.
That behavior is because the version of WAB that ships with Portal 10.6.1 was generalizing the geometry. This is fixed in 10.7 Portal released later this month.
We are on ArcGIS 10.7 and W.A.B. 2.12 and are still experiencing the same issue. If this is indeed fixed in 10.7, is there something additional we need to account for or check to solve this problem?