I am writing in 3rd person limited POV. I have noticed I have a section of text that seems to shift to omniscient. A lot of this happens when I'm forced to tell bits of information to the reader. By telling this information during this POV isn't it implied that particular person knows this? Sometimes to me it seems like I'm shifting POV.
Are there any obvious cues and clues, words, phrases, etc. that are an obvious giveaway that I am now writing in 3rd omniscient rather than 3rd limited?