Bug? Glitch?

Whats up with this annoying birthday bug? I cant enter my sons birthday in because it will just revert back to todays date? Wish I can record it, its quite annoying.

Update:
Wouldnt you believe it? After I sent this review it somehow magically started working. How convenient.

Whydoineedtothinkthishard? about YouTube Kids, v3.14.10