ExpandedTabBar is a very creative designed solution for "more" items in UITabBarController. It's greate experience to have more comfortable and intuitive UI.
When the app is changed to multi-tasking (Eg, with other app opened side-by-side), the more popup is not displayed or placed incorrectly and not visible to users.
It will be great if the number of tabbar items (currently set to 4) can be adjusted according to trait collection. Eg, Limit to 4 when horizontalSizeClass is compact and no limit when it is regular. This is also the behavior for native UITabbarController.
I just updated to version 3.0.1 and now the container is not appearing. I can see the arrow, the background alpha changes, but the container with my 3 items does not show. The last working version for me appears to be 2.0.2.