4d45fe6fb5
In our attempt to remove the material ripple effect from tab labels, we were killing all `transform`-based animations on other `md-tab-group` elements, such as animating the content when entering/leaving. (This wasn't an issue on Chrome, because it didn't respect our `!important` flag.) This commit fixes it by properly hiding the ripple effect (using a feature introduced in angular/material2@e4789c7b8) and allowing other animations to execute normally. Fixes #17998