Content that is paused can either resume in real-time or continue playing from the point in the presentation where the user left off.
Pausing and resuming where the user left off is best for users who want to pause to read content and works best when the content is not associated with a real-time event or status.
Note: See Understanding Success Criterion 2.2.1 Timing Adjustable for additional requirements related to time-limits for reading.
Pausing and jumping to current display (when pause is released) is better for information that is real-time or "status" in nature. For example, weather radar, a stock ticker, a traffic camera, or an auction timer, would present misleading information if a pause caused it to display old information when the content was restarted.
Note: Hiding content would have the same result as pausing and jumping to current display (when pause is released).