First off in the following when I mention "app" I'm specifically talking about the app for Android/iOS from Microsoft (Link) - I'm not talking about any app I have created, any "app" within SharePoint or anything else. With that out of the way here's my source of frustration:
I have a list containing a lot of fiels. Some of those fields I don't want the users to touch (As they are used in my workflow), so I've turned on content type and removed them. Now enter the SharePoint app - and lo and behold some of those 'removed' fields are fully editable from within the app.
What I find deeply frustrating is that it's not all the fields, that are hidden from the view which is present in the app.
One of the fields I did hide from view a few hours ago, so one thesis would be that the app simply are using some form of cached view of the rule.
Has anybody seen similar behaviour?