Tried this to Ancestry Improvements but can't post there
One thing that has annoyed me for many years, and sure I have complained to Ancestry about it in the past, is that if you click on "Save this person to you tree" you do not get offered the list of names in your default tree if it is not already open.
It does not matter if you change tree to add to the right tree because next time you will be again offered the wrong tree.
Also it does not matter if you open your default tree in a new tab.
You have to open the default tree before doing any searches.
It would seem logical that if you save someone to one tree then next time you save someone in the same session then it is likely to be to the same tree but not for Ancestry.
To have close the browser and start again.