iOS apps keep forgetting current collection

I use a single collection 90% of the time and the other 10% of logins etc are stored in 2 other collections for occasional use.

I also set a collection for the context that i'm currently in, so use a work collection when at work etc.

With this setup I leave the app open to the collection I use most of the time without getting logins popup all the time from other collections that I hardly ever use and aren't relevant.

In one of the more recent updates something has changed so that every time I open the app the view that's displayed is my top level account, so all items, from all collections are visible all the time.

How can I select a collection as default so that I only see items from this collection rather than from every login from every collection? Thanks