User blog comment:B214/Question and Answers 6/@comment-86.153.130.40-20160802001312/@comment-1359322-20160802040517

Ise doesn't have problem with his wings, he just doesn't know how to fly with it.

And the reason why Ise knows how to fly using his Dragon wings is mostly likely because of the BG. Remember Ddraig was the one who managed the flying for Ise prior to V19, so Ise may have just adapted it directly from Ddraig without him realizing.