how come after i publish and run it, the main menu look too big for the screen but after i press esc for once it back to normal and the back to main menu button in sub menu cant work propely?

but all work propely wen i use wed run game function

what version do you have?
you can check it in WED --> "Help", "About WED"

please post the version-number and edition (standard, extra, com, pro)