Features in a hosted web tile layer are not visible at high zoom levels in Portal for ArcGIS and ArcGIS Online Map Viewer

Description

In some instances, features of a hosted web tile layer published from ArcGIS Pro disappear beyond a certain zoom extent or scale in Portal for ArcGIS and ArcGIS Online Map Viewer, as shown in the image below.

Cause

The resampling property of the map service is disabled.

Solution or Workaround

Note: 
The following workflows require administrator credentials to edit the map service.

For Portal for ArcGIS

Set the resampling property to true in the ArcGIS Server Administrator Directory. Refer to How To: Enable resampling for a map service in the ArcGIS Server Administrator Directory for instructions.

For ArcGIS Online

Set the resampling property to true in the ArcGIS REST Services Directory.

1. Log in to ArcGIS Online with administrator credentials.
2. On the My Content tab, click the hosted tile layer.
3. Scroll to the bottom of the page and click Copy in the URL section.
4. Open a new browser tab, paste and edit the copied URL according to the following URL format:

https://tiles.arcgis.com/tiles/<serverID>/arcgis/rest/admin/services/<name>/MapServer/edit

5. Log in with administrator credentials.
6. Scroll to the bottom of the page and click Edit in the Supported Operations section.

7. On the Edit page, under Service Definition, add the following line in the JSON text box:

"resampling": true,

Note: 
The resampling property must be added above the exportTilesAllowed property in the Service Definition.

8. Click Edit.

The features are now visible at high zoom levels in Map Viewer, as shown in the image below.