ArcGIS JS API 4.26 StreamLayer Data Gradually Decreases Over Time

[wrsue]

Using ArcGIS JS API version 4.26 with a StreamLayer, I've observed that the streamed data displayed on the map gradually decreases over time, preventing a stable display of the complete historical dataset. This issue did not occur in version 4.25 and appears specific to version 4.26.

Steps Taken and Attempted Solutions:

objectIdField Configuration:
Ensured that the necessary objectIdField is set according to the requirements of version 4.26.

timeInfo Configuration:
The metadata has been correctly configured for timeInfo as follows:
"timeInfo": {
"trackIdField": "icao24",
"startTimeField": "last_contact",
"endTimeField": null
}
Verified that the fields icao24 and last_contact exist and have the correct data types.

Additional Checks:

Confirmed that geometry information (geometryType, geometryDefinition) is correct.
Checked purgeOptions settings to ensure data is not prematurely cleared.
Examined connection stability and event handling logic (e.g., WebSocket connections, event listeners).
Verified that the server-side data update mechanisms and field structures are intact.
Environment Information:

API Version: 4.26
Issue Onset: Works correctly in 4.25, issue appears in 4.26
Relevant Configurations: objectIdField and timeInfo are set, and time unit conversion has been attempted.
Expected Assistance:

Despite confirming and configuring all the above parameters, the StreamLayer data still gradually decreases over time. I am seeking help or insights on:

Other potential causes for this issue?
Are there any known bugs or behavioral changes in version 4.26 that require additional settings or patches?
Any recommended debugging methods or solutions?
Any assistance or suggestions would be greatly appreciated. Thank you!