This is just a small issue, however maybe not difficult to implement.
When you create a new tabset, the old pre-selected tabset is still selected, now if you make a change, i.e. save the tabset again without selecting the newly created set, you will overwrite the previously selected set, and then isn't an undo, so can be a major issue
This is just a small issue, however maybe not difficult to implement. When you create a new tabset, the old pre-selected tabset is still selected, now if you make a change, i.e. save the tabset again without selecting the newly created set, you will overwrite the previously selected set, and then isn't an undo, so can be a major issue