I've noticed an odd problem with Bluetooth Passthrough on my system. Everything worked normally in 5.0-2501, but 5.0-2505 and beyond cause Dolphin to hang on my system when closed, eating all of a CPU core's processing time. I have to end task on the Dolphin process to get it to close. This problem doesn't occur with BT passthrough turned off. I'm using a Sena UD100 BT adapter on Windows 10 x64.
Another strange thing I've noticed that may be related, in 2501, when I press the close X with a game running, the game window fades to black, but dolphin doesn't close. It takes a second press of the X to actually shut Dolphin down, and the wiimote stays powered on. When I reopen Dolphin and start a game, the wiimote powers off, but I can press a button and it connects back up just fine. In 2505, when I press the close X, the Dolphin windows close and the wiimote turns off, but the process stays running in the background until I kill the task.
Another strange thing I've noticed that may be related, in 2501, when I press the close X with a game running, the game window fades to black, but dolphin doesn't close. It takes a second press of the X to actually shut Dolphin down, and the wiimote stays powered on. When I reopen Dolphin and start a game, the wiimote powers off, but I can press a button and it connects back up just fine. In 2505, when I press the close X, the Dolphin windows close and the wiimote turns off, but the process stays running in the background until I kill the task.