The same problem here with my Bluetooth mouse. My adapter information is:
Bus 003 Device 004: ID 0a5c:201e Broadcom Corp. IBM Integrated Bluetooth IV
A weird behavior observed: when the mouse can not reconnect, toggle the "Visibility setting" in "Bluetooth Preferences" dialog from "Hidden" to "Always visible" will help the bluetooth mouse get re-discovered.
The same problem here with my Bluetooth mouse. My adapter information is:
Bus 003 Device 004: ID 0a5c:201e Broadcom Corp. IBM Integrated Bluetooth IV
A weird behavior observed: when the mouse can not reconnect, toggle the "Visibility setting" in "Bluetooth Preferences" dialog from "Hidden" to "Always visible" will help the bluetooth mouse get re-discovered.