There are two aspects: how many errors are published and how they long before they are caught? The BICEP debacle is an example of a claim that should have gotten caught before it was published, doing an important calibration step using a photo of preliminary data?!
Actually, the error was caught before publication. They sent it to ArXiv, the standard pre-publication space, so that other physicists could read and comment on it. It was there that the error was quickly caught.
Well, it's all a little ambiguous. You can choose to pre-publish or not, and you can choose to announce whenever you want: before pre-publishing, after but before publishing, and at the moment of publication itself.
It's certainly true that they announced early, but it's also true that the community at large regarded it with appropriate skepticism, causing the whole thing to be self-corrected in months.
