I am seeing questions like https://askubuntu.com/questions/1554208/ubuntu-25-04-mediatek-foxconn-mt7925e-bluetooth-not-functional but I see that device in a commit ~ubuntu-kernel/ubuntu/+source/linux/+git/plucky - [no description]
Does anyone know how this can happen?
Maybe missing firmware? Impossible to tell without logs.
What logs do you want? I sent a comment to the user from the askubuntu question and have another user trying Ubuntu 25.04 from ISO on USB. I will try to get the users involved to file bug reports against linux. Some info from the one user is at https://forums.linuxmint.com/viewtopic.php?p=2677695#p2677695 while running Ubuntu 25.04 ISO
Sometimes bluetooth can have issues when there’s wifi adapter near by cranking out power. I had that issue. Loading from live usb and it works fine, then with wifi connected it keeps dropping connection. But also with select devices, for some odd reason it didn’t for Apple Magic Keyboard. I guess it’s in the name…Magic 
This is nothing like that. The btusb kernel module isn’t even trying to load for this device so it doesn’t even attempt to find firmware or anything and btusb should load for anything that even matches some of the generic entries in that source code and what makes this even more weird is that this device ID 0489:e111 seems to be in the 6.14 source code.
I did some further searching and it seems the 3 users I know of that have this issue are using Lenovo Legion 5 laptops with fairly recent BIOS