Are matrix commands working for anybody or is it just me?

matrix:
  homeserver: https://matrix.org
  username: "@xxxxxxxxxxx:matrix.org"
  password: "yyyyyyyyyyyy"
  rooms:
    - "!zzzzzzzzzzzzzzz:matrix.org"
  commands:
    - expression: "(?P<text>.*)"
      name: incoming

This doesn’t work at all. No matrix_command events are triggered when i write to the matrix room. I also tried word commands instead of expression commands.
The matrix.send_message service works and those messages appear in the matrix room.

Does anybody have an idea how to troubleshoot?
Thanks in advance.

Same here, I tried the example from the Docs and the commands are not working.
Notifications seems to be fine