I have never had an IS issue with my a7r II. I have taken that camera to both poles and lots of places in between. They have taken a beating and seems to work fine. I have spent some time with the a7r III this morning and I am impressed. Shooting with it for the rest of the day in a few hours. The joystick and rear focus button are nice additions.
Well Kevin that's good for you and I truly am happy for you, but with over 20,000 hits on the link above and lots of comments from other users who do seem to be having the same sticky sensor problem as me, means it isn't the same level of satisfaction for everyone.
But if I am honest, I don't suppose the sticky sensor is really that much of a problem is it, once you realise that all you need to do when the camera refuses to work and doesn't tell you why, is just give it the old "Wiggies Knock" treatment and bash it around a bit, instead of grabbing a few shots of that quickly fading sunset instead
OK, so you probably think I am nothing but a complete moaning so-and-so, but I do love the images and the quality that you can get with this camera and I would still recommend it to other Canon users and I am even thinking of stumping up for this new version - oh woe betide me
Oh and the fact that with the A7R3's 'pixel shift technology', which means that it would give me the equivalent of a 126 Mbit native image file, that will compete with and quite possibly blow the top Phase One 100 Mbit MFD sensor out of the water, has really got me salivating already
Dave