In the past week I have repeatedly observed Titania's melee attack speed drop by nearly 50% after exiting Razorwing. This issue is happening with two different Zaws that I will describe at the end. Every occurrence has been on the Plains of Eidolon, in a number of different combat situations.
Both of these Zaws were built with 1.00+ Attack Speed, and when this bug occurs it is not a subtle change. Melee animations drop as slow as a Cold Status Effect would make it, or perhaps drop to the slowest possible Zaw speeds (which is .650). Either way, it roughly amounts to cutting my Zaws attack