Time span "Maximum of all" end time setting not working in experience builder

Question

I have a feature layer with start and end time setup. When saving as a web map, the user can only slide between the saved time "Start and end points". If more data added after the saved end date, it won't show up.

I followed this blog Auto-Update Time in Web Maps, deleted the end time through ArcGIS Assistant, but after testing, a map without end time slider infor will crash the experience builder.

I then find out in Experience builder timeline widget, I can configure the end time to "Maximum of all". But the widget seems not reading all layer's maximum end time properly.

On the layer, the end time goes to

But the widget seems can't find the new feature's end time and update the maximum end time correctly.

BrandonGuo · Answer

@TonghuiMing Here's the map ID: 994c81adc47e421aa4b0e58d6b6fff2e

The layer was generated by Survey123 connect not uploaded through ArcGIS Pro. Then using the AGO "Time settings" to enable the time settings.

TonghuiMing · Answer

Hi @BrandonGuo, thanks for sharing. I can see what you saw in this app. Some notes -

We can access one layer but not the map, which seems to belong to your org

We've found some unexpected mismatch between your app configuration UI vs. the app config - not sure how this comes up, we will take some time to debug. Very weird

Then, just to confirm - when you publish the layer and enable the time extent, have you checked the following box saying "Data is a live feed", and then add an interval to refresh and update the feature?

The reason I ask is that your data did get updated to 9/5, but in your service, the extent does not pick up the latest changes:

Tonghui

BrandonGuo · Answer

Sure, @TonghuiMing  here's a demo app: Demo timeline

In timeline setting, it can only find the maximum time as 29/08/2025

The dataset actually contains data in Sep. Upcoming road works - Data