So, you can’t select a datasource group in the tree. If you do, it selects the first datasource under it and expands it (then selects the first instance under it sometimes). This has frustrated me a lot since the first datasource isn’t usually the one i want (just because it’s alphabetically before the others doesn’t make it more interesting).
Also, while you’re messing with stuff, can in request new functionality? I often use the “debug” button the raw data tab to get me to the right collector for the device i’m currently looking at. In UIv3, I have to navigate down to an instance and go to the raw data tab. However, the link for the debug button in that location (and all instances on that device) is the same. Could you put that link in the device overflow menu?