Following on from this question I further evolved the demo messages example in an attempt to create page transitions between two pages with core-lists.
I\'m trying t
First, there's no slide-from-left transition. You will need to remove everything related to it in your code.
I have found that the hero-transition doesn't work well with slide-from-right transition. A possible alternative would be, wrap those two paper-fabs in another core-animated-pages.
Please see this jsbin for reference. Notice that the paper-fabs move just like they are animated with a slide transition ('cause hero-transition animates the shape and position between elements, in this case, the animation transition should look identical to a slide one)! So maybe, you don't need to apply the hero-transition at all?