We have a page with two dropdowns which have a list of options and it's selected value set to two different properties of one data variable. On IOS the dropdown is only showing one of the values correctly following page mount, on web it works fine. And also it works properly in the IOS preview app, which made me think to make a build with an older runtime, so:
the issue is not present on builds created with runtime 4.7.x.
I'm not really sure what's underlying, but it would be beneficial to take a look at this, as it might affect future runtimes and updates to the preview as well.