I have recorded 2 instances of this: after being stunned off a zipline, and after being hit with [Knockdown]. I do know that you stay stunned from these effects until you touch the ground, but I don't think it's supposed to immobilize the flight.
View attachment clip_1,774,882,271,911.mp4
View attachment clip_1,774,882,536,635.mp4
View attachment clip_1,774,882,271,911.mp4
View attachment clip_1,774,882,536,635.mp4