Hi! Which recipe are you running? If you're running an active learning-powered recipe like ner.teach or textcat.teach, this is expected – remember that you're annotating the most relevant examples here, so Prodigy will score them and skip some examples in favour of others. In ner.teach, you'll also be seeing lots of different analyses of individual examples.
If your goal is to just annotate every single example in your stream, you probably want to be using a manual recipe. You can find more details in this thread: