Power cube isn't used from attack menu when pressing quickly
1. Be somewhere close to high-level opposite faction portals to make it easier for XM to be drained when you attack. Also best if you have only L8 bursters and cubes, so that they're next to each other in the carousel.
2. Use bursters until you're out of XM and can't use them anymore.
3. As fast as you can, scroll to power cube, press Use button which lights up, scroll back to burster.
4. If you do it fast enough after firing last burster before XM is drained, power cube isn't applied and you're still out of XM.
Here on the video you can see that the animation clearly shows I pressed Use, but power cube didn't work.
This needs to be fixed because it slows down attack and leads to lost time, which can be used by the opposite side to recharge portals.
2.70.1-3e2b0b3d (actually is happening in a few last updates up to this moment)