Unsubmitted changes in form lost after changing other nodes

[sverhoeven]

Given you have a node selected and are filling its form then adding another node or deleting another node or reordering nodes will cause the values entered in the form to be reset to the previous state.
I expected the form to keep whatever I entered into it even when adding/deleting/moving other nodes.

[Peter9192]

To take this one step further, I initially didn't even realize I had to press "submit" in order for the changes to be saved...