This seems to have happened recently but the TAB key no longer counts as "enter" for data values (see image where I am entering values and using TAB - data is erased and old data returns). This used to be a nice way to quickly enter coordinates or values in the Spine data boxes. As a reference, things like Photoshop and a few other programs I used in regular rotation allow you to keep values you entered by hitting TAB.
It looks like hitting ENTER is the preferred way now and it's a bit slower for rapid changes since the end results is a lot of re-mousing around to get back to where you were.
Might we get TAB back in effect or was there a reason it was taken out?
-Tim