A quick post just to highlight how different browsers will render the ribbon differently based on the zoom level of the session. Some examples below to show the differences between IE 9 and Chrome version 26. At the default 100% all browsers render the ribbon identically. All pages / ribbons are affected.
IE 9 – Tasks Page – 125% zoom:
Chrome – Tasks Page – 125% zoom:
Notice the buttons are all grouped together.
What is interesting is if you increase the zoom to 150% in Chrome the buttons are no longer grouped:
Just something to be aware of if you have a user who raises this. Ask them to press Ctrl and 0 to set the zoom to the default 100% and the buttons should appear as normal on the ribbons.