Maintenance for the week of April 22:
• [COMPLETE] Xbox: NA and EU megaservers for patch maintenance – April 24, 6:00AM EDT (10:00 UTC) - 12:00PM EDT (16:00 UTC)
• [COMPLETE] PlayStation®: NA and EU megaservers for patch maintenance – April 24, 6:00AM EDT (10:00 UTC) - 12:00PM EDT (16:00 UTC)
I believe what you saw/read was the custom icons that you see in the screenshot. Those icons are not interchangeable. They are added to best resemble the in-game ones, that's all.
"Custom icons added for Potions, Poisons, Food, & Mementos.
Custom icons for Champion Point Abilities, Item Sets, Weapon Abilities, and many NPC abilities (See screenshots for more)."