I'm on revision 1662 running Usbloader gx on vWii. I've run into an issue I'd like to share in hopes there is either a way to fix it or that the bug can be isolated. Using HBL2HBC previously and now using a CBHC mod to autoboot into vWii mode, I love the fact that I can use a wiiu pro controller without needing batteries for a wiimote. That said, if I launch an emulator via a forwarder (the .dol for which has been updated to support pro controllers, Snes9X for example) and then return to the loader via that homebrew's menu, I am returned to unloaded gx to find only system channels are displayed, not my gamecube/wii games, and my pro controller will no longer sync or move the pointer until a restart of the console occurs.
I can't recall if holding the power button on the controller will still shutdown the console or if I had to manually pull the power/hold the button, but returning to loader is definitely not working properly. I don't have this issue when I launch a gamecube game, for example, via nintendont directly from usbloader gx. I can load a game, hit home, and then select something else via the pro controller.