Inconsistent hover behavior on navbar items

Summary

When hovering the top navbar, there is some inconsistency regarding style. All the items, except the Projects and Groups drop-downs, have smooth changing of background color.

navbar_hover

Steps to reproduce

Hover over the items in the top navigation bar.

What is the current bug behavior?

The Projects and Groups items don't have a transition, but all the other elements on the top navbar have one.

activity-transitions

What is the expected correct behavior?

All the navbar buttons should have the same behaviour on hover (I think having a transition is more pleasing for the users)