I have a web map with the same feature layer shown twice in the table of contents. Once to show type and once to show maintenance status. The problem with this is when clicking on the feature, the pop-up shows "two records". These are actually the same record and it's confusing to some. In order to make it more simple, I removed the pop-up for the maintenance layer.
This isn't a problem when using an Android device. Trying to edit a feature with an iOS device in this scenario provides a message that states "Select a feature to view details".