Bluetooth indicator dissappeared, all devices vanished from menu.

[alterae]

Expected Behavior:
The Bluetooth indicator stays in the wingpanel, connected Bluetooth devices stay connected, and the Bluetooth page in settings shows all visible devices.

Actual Behavior:
The Bluetooth indicator vanished entirely from the wingpanel, connected Bluetooth device (a wireless mouse) stopped providing input, and the Bluetooth page in settings showed Bluetooth as enabled but showed no visible devices.

What I Was Doing at the Time:
Normal usage. Firefox and Discord open, playing a YouTube video in the background while downloading a file in Firefox. CPU usage in at least one core spiked, causing the system to hang for multiple seconds, during which the described issue occurred.