I am using Mendix 7.19 and call a simple microflow as 'default home page'.
When opening the app for the first time and opening it on the mobile browser, it does not allow me to scroll vertically. When navigating to another page and then back, makes it is possible to scroll vertically again, while using the same microflow.
This seems wierd.
are you sure its opening homepage-mobile? you could trouble shoot this with adding text on the mobile page.
it seems more like a front end issue then a microflow issue.
What content is different on your mobile page vs your desktoppage? would it be possible to make it on 1 page and then using the right elements make your designs responsive?