State tree collapses when switching between State and Diff

[aspiers]

In the Inspector, when I'm looking at the State view, if I expand a few nested levels within my state tree and then change the view to Diff and back to State, the state tree gets automatically collapsed again :-( This is really inconvenient when working on the same subset of the state tree.

I'm not sure but I think this is a different bug to #286. Iif not, #286 needs reopening, because I am seeing this with 2.14.2. Thanks!

[zalmoxisus]

This is how Inspector Monitor works. When you switch to Diff tab, the State tab's component is unmounted. To support that, we'd have to persist the expanded nodes. In #286 there were an issue on updating the JSONTree component, which was fixed.

If you could implement that in Inspector Monitor, it would be much appreciated.