Grid dbus activate does not work on the "*_key" actions

When sending a DBUS command to the Grid plugin, using either command "dbus-send" or using the python script "compiz-send.py" in "compiz-debug-utils" calling for instance "put_center_key" (or any other *_key action) I get the following error:

> compiz-send.py --call grid put_center_key                  
Traceback (most recent call last):
  File "compiz-send.py", line 112, in <module>
    obj.activate(*args)
  File "lib/python3.7/site-packages/dbus/proxies.py", line 70, in __call__
    return self._proxy_method(*args, **keywords)
  File "lib/python3.7/site-packages/dbus/proxies.py", line 145, in __call__
    **keywords)
  File "lib/python3.7/site-packages/dbus/connection.py", line 651, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Message recipient disconnected from message bus without replying

Get commands work fine though:

> compiz-send.py --get grid put_center_key 
<Super>KP_Begin

Call commands to Expo works as exprected:

> compiz-send.py --call expo expo_key 

Env Details:

Using compiz version: 0.8.16.1
OS: Arch Linux
Linux pc01 5.3.8-arch1-1 #1 SMP PREEMPT @1572357769 x86_64 GNU/Linux