OS 15.1.4 query/media-player Expired

Hello Roku Community Team And Everyone

After my Roku Ultra device upgraded its system to OS v15.1.4 build 1500, the ECP command for querying media playback information (query/media-player) no longer returns playback progress 、duration and other related information. Is this command being deprecated, or will there be a new command to replace it?

Below is the content of the official API documentation:

Roku OS 15.1.4 build 2500 has fixed this issue.