Thanks for the screenshot, I understand now what you’re talking about 
For me, the Bluetooth Pairing shouldn’t be displaying a non-modal notification (dialogNotification.xml) - which are, ideally, purely informational with no action required. Where action is required - even if that action isn’t within Kodi/OSMC itself - they should preferably be displayed in a modal dialog (dialogConfirm.xml), which will display until you, the user, dismiss it.
From the look of it, this notification is being generated by myOSMC, so perhaps @sam_nazarko knows whether we can adjust how the add-on presents this…?