During the tutorial, and you need to switch 'tabs' between the production buildings and the big, buildings, it will animate to draw your attention to that tab. This does not happen for when new buildings are unlocked on the toolbar. When the 'mission' is 'you should place an assembler!' it unlocks the assembler icon, but doesn't highlight or draw your attention to it. The same animation should be used to highlight the newly-unlocked icons.