Loading screen when loading into a world sometimes doesn't display text

The first attached screenshot is of me leaving my world. For the first 5ish seconds of leaving, no text appears. The second one is of me joining my world. When the XP loading bar first appears, all text disappears for 1-3 seconds. During both of these events, the beta text at the top of the screen also doesn't show. This started occurring after i joined the beta program.