Swimming bug under all doors

Dear Mojang.

I search little strange bug under all type of doors at minecraft.

If I open doors and I stay on same place and when i close them I´m stuck in block and I swimming, I can go out of this but this bug is very strange.

 

Thanks for view...

 

PS: I search more, now if i sit in a cart I stuck at him and I repeat swimming, this bug we search maybe in more items then in cart