https://bugs.winehq.org/show_bug.cgi?id=52101
--- Comment #2 from Rémi Bernon rbernon@codeweavers.com --- Interesting, although I don't think we're supposed to support keyboard or mouse devices this way, at least not for now, as winebus.sys is really only written for joysticks and gamepad devices.
I think the problem is either, that we send a report before the device has been started, or that the device doesn't have any report, or that it's not been started at all maybe because the hidclass.sys driver didn't match it somehow.
I guess the first case may also happen with any device if anything is pressed after the device has been created and before it has received the IRP_MN_START_DEVICE request (or after IRP_MN_REMOVE_DEVICE if it's being forcefully removed from the Win32 side).