Date & Time: 6/11/2018
Frequency: Always when 2 equipments are equipped.
World name: Leviathan
Character name: Rinh'sae Poales
Retainer name: N/A
NPC name: N/A
Monster name: N/A
Class/Level: SMN/70
Party or solo: Solo
In-game time: N/A
Area and coordinates: N/A
Housing: N/A

Steps:
1. Equip the Bonewicca Whisperer's Sarouel
2. Equip the Angelic Thighboots
3. There will be a reddish/purple band around the middle of the boots coming from the pants clipping through. I have provided a screenshot below.




I've included arrows in case it's not obvious.
Of note, this does not seem to occur on my lalafell friend or female miqo'te friend.