Why are live tiles so inconsistent?

[SeaWindows]

Some app tiles just remain at the logo most of the time while Facebook keeps showing someone's birthday even though its the next day. Sometimes Facebook also shows the previous person's birthday.

 

[OldMillXxX]

The tiles are about as inconsistent as the notifications. Hopefully regular patches start to contain some of these quirks.

 

[SeaWindows]

Yeah the notifications suck as well