With the latest update Integrations can now be opened in iframes, just like in Desktop UI (but better 
).
Currently default is still to open Integrations in named tabs, the default can be changed in the configuration menu. It is also possible to have it set per tile. For example, I open Node-RED in a named tab, but everything else inside an iframe (App Window in Open Type).
Should the default be changed to iframe or remain unchanged?
This setting is per dashboard, so if you want it different on different devices, just use different dashboards.
The color of the Tile Title is changed when an active App Window exist for that tile. Each tile can have two different App Windows, one for status and one for the actual Integration.