Edited for this thread to match feedback rules.
Could that syandanna be more...... flexible? Because it clips with Limbo's robe tail.
Limbo's robe tail is very lightweight while the syandanna looks too heavy. So they clip when you go down using a lift or a ramp or even with the wind in PoE.
Here the evidences:
In plains of eidolon
UPDATE: Added a new image inside a lift