First, each time I see a wrongly placed image (and I am talking about tens, hundreds of kilometers, I am not nitpicking here), I go to "Report a problem" and select "Not a photo or video of the place". Then, I insert my email and I need to do one of those "select all squares with cars" tasks. I click "verify" and it just loads for hours. In other instances, there is no anti-bot task, I click the final "report" button and the screen with "500. That’s an error." appears.
Also, quite often user-updated gallery (Google Maps photos) just don't appear. I find this very often to be the case. I zoom to one place and they are there, and then, I go to another and there is no single image, but many of those "360"s.