topic Attachment Viewer (Attachment-Focused Layout) — Attachments Not Fully Loading on Initial App Launch After October 2025 Update in ArcGIS Instant Apps Questions https://community.esri.com/t5/arcgis-instant-apps-questions/attachment-viewer-attachment-focused-layout/m-p/1665276#M3535 <P>After the <STRONG>October 2025 ArcGIS Online update</STRONG>, which introduced the modernized Attachment Viewer interface and new filmstrip gallery, I noticed that the <STRONG>attachment-focused layout</STRONG> does not load all attachments within the map extent when the app first opens. Only a partial set of attachments appear until I scroll through the gallery or zoom/pan the map—then the remaining attachments load.</P><P>The same hosted feature layer (56 points with photo attachments) worked fine before the update, and the <STRONG>map-focused layout</STRONG> still loads all attachments correctly. The issue appears limited to the <STRONG>attachment-focused layout</STRONG> after the October 2025 release.</P><P><STRONG>Environment:</STRONG></P><UL><LI><P>ArcGIS Online (AGOL)</P></LI><LI><P>Hosted feature layer with 56 point features (each with JPG attachments)</P></LI><LI><P>Attachment Viewer Instant App created <EM>after</EM> the October 2025 update</P></LI><LI><P>Tested in Chrome and Edge (same result)</P></LI></UL><P><STRONG>Steps to Reproduce:</STRONG></P><OL><LI><P>Create a new Attachment Viewer Instant App using the <STRONG>attachment-focused layout</STRONG>.</P></LI><LI><P>Use a hosted feature layer with photo attachments.</P></LI><LI><P>Launch the app.</P></LI></OL><P><STRONG>Observed Behavior:</STRONG></P><UL><LI><P>On first load, only some attachments display.</P></LI><LI><P>Scrolling or zooming triggers additional attachments to appear.</P></LI><LI><P>No console errors appear.</P></LI></UL><P><STRONG>Expected Behavior:</STRONG><BR />All attachments should load upon initial app launch without requiring map or gallery interaction.</P><P><STRONG>Notes:</STRONG></P><UL><LI><P>The issue does <STRONG>not</STRONG> occur in the map-focused layout.</P></LI><LI><P>This seems to be a regression introduced with the new filmstrip gallery and modernized interface described in <A href="https://www.esri.com/arcgis-blog/products/instant-apps/mapping/attachment-viewer-a-new-attitude" target="_self"><EM>Attachment Viewer: A New Attitude</EM> by Sarah McDonald</A>.</P></LI></UL><P><STRONG>Workaround:</STRONG><BR />Use the <STRONG>map-focused layout</STRONG>, which continues to display all attachments correctly on initial load.</P> Wed, 12 Nov 2025 21:33:41 GMT rwygmans 2025-11-12T21:33:41Z Attachment Viewer (Attachment-Focused Layout) — Attachments Not Fully Loading on Initial App Launch After October 2025 Update https://community.esri.com/t5/arcgis-instant-apps-questions/attachment-viewer-attachment-focused-layout/m-p/1665276#M3535 <P>After the <STRONG>October 2025 ArcGIS Online update</STRONG>, which introduced the modernized Attachment Viewer interface and new filmstrip gallery, I noticed that the <STRONG>attachment-focused layout</STRONG> does not load all attachments within the map extent when the app first opens. Only a partial set of attachments appear until I scroll through the gallery or zoom/pan the map—then the remaining attachments load.</P><P>The same hosted feature layer (56 points with photo attachments) worked fine before the update, and the <STRONG>map-focused layout</STRONG> still loads all attachments correctly. The issue appears limited to the <STRONG>attachment-focused layout</STRONG> after the October 2025 release.</P><P><STRONG>Environment:</STRONG></P><UL><LI><P>ArcGIS Online (AGOL)</P></LI><LI><P>Hosted feature layer with 56 point features (each with JPG attachments)</P></LI><LI><P>Attachment Viewer Instant App created <EM>after</EM> the October 2025 update</P></LI><LI><P>Tested in Chrome and Edge (same result)</P></LI></UL><P><STRONG>Steps to Reproduce:</STRONG></P><OL><LI><P>Create a new Attachment Viewer Instant App using the <STRONG>attachment-focused layout</STRONG>.</P></LI><LI><P>Use a hosted feature layer with photo attachments.</P></LI><LI><P>Launch the app.</P></LI></OL><P><STRONG>Observed Behavior:</STRONG></P><UL><LI><P>On first load, only some attachments display.</P></LI><LI><P>Scrolling or zooming triggers additional attachments to appear.</P></LI><LI><P>No console errors appear.</P></LI></UL><P><STRONG>Expected Behavior:</STRONG><BR />All attachments should load upon initial app launch without requiring map or gallery interaction.</P><P><STRONG>Notes:</STRONG></P><UL><LI><P>The issue does <STRONG>not</STRONG> occur in the map-focused layout.</P></LI><LI><P>This seems to be a regression introduced with the new filmstrip gallery and modernized interface described in <A href="https://www.esri.com/arcgis-blog/products/instant-apps/mapping/attachment-viewer-a-new-attitude" target="_self"><EM>Attachment Viewer: A New Attitude</EM> by Sarah McDonald</A>.</P></LI></UL><P><STRONG>Workaround:</STRONG><BR />Use the <STRONG>map-focused layout</STRONG>, which continues to display all attachments correctly on initial load.</P> Wed, 12 Nov 2025 21:33:41 GMT https://community.esri.com/t5/arcgis-instant-apps-questions/attachment-viewer-attachment-focused-layout/m-p/1665276#M3535 rwygmans 2025-11-12T21:33:41Z