Hi Mark,
Unfortunately the popup issue you are describing sounds like you are running into BUG-000106480. We are aware of this issue, and working hard on a fix right now. This is an issue many users are running into, and it's a priority for us to resolve. Some possible workarounds for this issue are outlined in https://community.esri.com/groups/explorer-for-arcgis/blog/2017/08/01/explorer-for-arcgis-ios-v1711-...
For the Find Locations - Can you tell me the Version of the app you are testing? do you have 17.1.0 or 17.1.1 (an update we released last week). We addressed issues in Feature Locations (Feature Search), so I want to confirm that you have the latest release to try your scenario against. Joel Whitney will be able to help track down with this functionality. We will use your Redmond Infrastructure map to try to track this down.
The Browse functionality by Groups is something that many folks have mentioned in their feedback. We are currently evaluating this enhancement.
Would you like to be added to our Beta community? We plan to provide a Beta via TestFlight when we are ready with our next group of issues addressed. This will give you the opportuntiy to test your fixes prior to our app store release, so we can fix any issue folks are reporting with the update. To get added to our beta community please email Explorer4ArcGIS@esri.com to request this.
Also - you can email the Explorer4ArcGIS@esri.com alias directly with any reproducible steps for issues you find in our released app, or in any Beta.
Thanks,
Heather