Trying to write Two Double Whole Notes

It's a bit of non-working because the double note doesn't fit in your measure, and gets split into two tied whole notes, leaving the cursor on the second whole note after entering the first double. Which in its turn results in only augmenting that last note.

Workaround 1:
1. Enter Note entry mode, set duration to double.
2. Press the key to enter your first note
3. Press the Left arrow key *twice*
4. Augment using Shift+[A-G] -> only the first note is now augmented
5. Press + -> augment note is now tied into the next measure as well.

Workaround 2 (only since 2.0.3):
1. Enter Note entry mode, set duration to whole.
2. Enter the first note as a whole [A-G]
3. Augment it using Shift+[A-G] -> you now have the correct chord with the duration of a whole
4. Press + -> chord is tied into the next measure for the selected duration