Mouse disappears after disconnect

Normally devices that are paired but not connected are listed under "Paired Devices". Example:

For some reason though my mouse (Logitech M720 Triathlon) disappears completely when I turn it off or press the disconnect button. I need to reopen the bluetooth settings for it to be listed again as Not connected.

Below a screenshot of the following steps:
1. Turning mouse off.
2. You see the mouse disappear from the list
3. I close and reopen the bluetooth settings
4. The mouse is listed as Not connected.

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