This one's fixed.
Nope, isn't (v19, linux). In case the report above wasn't clear, here's step-by-step:
1. Need to use one of the allies, who acts right before an enemy.
2. Do whatever, may not even spend any AP, except spending the last AP on movement (so the auto end turn won't occure).
3. Keep the mouse pointed at any unit it shows a tooltip for. In case more details what this condition means are needed, here are subcases:
a. When KOed an enemy keep pointed the mouse on him (so his tooltip with 0 or negative HP is visible).
b. When having any item of destruction at hand, point at any unit.
c. When having healing item at hand, point at friendly unit.
4. When the mouse is pointed, and a tooltip is shown as said above - end the turn using the shortcut.
5. Observe persistent tooltip till your next turn.