IssueTracker

Some ideas for stress tests:

1) nesting / combining together:
ViewPager2
Fragments
ScrollView
RecyclerView
CollapsingToolbarLayout | CoordinatorLayout
AppBarLayout
Menus

2) Scroll while X is happening .. or X happening while scroll

The CollapsingToolbarLayout in a CoordinatorLayout does not work correctly in combination with ViewPager2. If you try to scroll vertically, almost every time the view pager scrolls horizontally instead.

Thank you for reporting. Could you file as a separate bug? Ideally with a sample app? It'd greatly help us prioritise / get to it earlier.

Any news on this bug?

If you are referring to #comment3 we haven't investigate yet. Would you be able to create a sample app / file a separate bug for this? It'd help us get to it faster.

Here you are:
https://github.com/marbat87/ScrollingViewPager2.git

As reported in #comment3: If you try to scroll vertically, almost every time the view pager scrolls horizontally instead.
This doesn't happen with old ViwePager.

Regards

Let's track CoordinatorLayout scroll issue in http://issuetracker.google.com/138668210
Thanks for repro steps and reporting.