The run command is a fire and forget command and will not show any output and It does not execute in the user context. But in your case you could add the following to your command to create an output file with the computername in the filename:
manage-bde -status > c:\manage-bde-%computername%.txt
HI guys, i could reproduce it with latest windows updates:
After installation and reboot, the view from PROTECT:
Remediation through dynamic group and run command works! But as stated before, a reboot is preffered.