The XnView Shell extension is the only app/extension I've managed to find which allows you to flip images from the File Explorer context menu (which is quite awesome indeed

My only gripe is that when trying to flip an image whose height and/or width are not a multiple of 8, a warning appears that unused pixels may be removed. This becomes a little a bit irritating if you're flipping multiple images.
Is there any way to disable this warning?

Thanks,
Ivan