MQTT Collector tags not loading

Hi Canary Team, Ken,
 using the MQTT collector on V25.1 and V25.3 several collector groups don't load their taglist.

The tags however are subscribed and filtered, but never loaded in the admin center.

Tested configuration:

• MQTT server: both using a localhost MQTT broker and a remote MQTT broker
• different datasets
• Using JSON kepwareIOT format and custom JS
• Applying a filter does not change the loading

Please find the reduced configuration in attachment (SQLlite) for further research.