This is not the first time my wp-admin wordpress menu becomess smaller and I spend a lot of time in google to figure out what is happening and why admin menu becomes smaller? This is quite an unusual problem because, I do stuff from left sidebar menus and out of a sudden the menu becomes minimized!!!
To make the wordpress administrator menu revert back to normal size, just click the small button on down left triangle button.
Voila it is fixed ! 🙂
So what to do to make wordpress left sidebar menu smaller.