In 0.24 (for Minecraft 1.12 mod) wings from Wings mod wiggle and move with player's body's animation.
(AIM with bow) + shift = connected wings

In 1.0.0-BETA-2 wings lose their animations.
(AIM with bow) = wings separated from body

shift = wings separated from body

Mods on Minecraft version: [1.12.2]:

• Mo' Bends version [1.0.0-beta]
• Wings [1.1.6]
• Optifine

Okay, what are the Wings in the Wings mod? Are they an armor piece? If so, then that would kinda make sense. The new beta introduced a new system for mutating custom armors.

A temporary solution right now would be to add the armor items to a list of armors that should be kept as vanilla (in the mod's config).

Wings also grants the play flight, but mo' bends at default plays a falling animation when flying with wings. Dunno if this has been said as I only just found this issue and am currently researching my configuration options. I will say tho that the wiki says I can get the default bends pack from the mod's menu, but mine doesn't show up from what I can tell

Refer to #254 for further conversation.