Hello,
Right now Meteor Swarm shots 4 meteors if you cast it with and without quicken metamagic stance. It works good but if you deactivate quicken stance and use the cascade menu with right click to activate quicken only for meteor swarm: you get only 3 meteors out of 4.
Please fix this bug, also filed bug report.
At this link you'll find the video I recorded to show you the bug:
Yours Sincerely,
Z.