Ward potions - unable to use when assigned to a hotbar

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Date & Time: 10:55 PM / Oct 25 2019
Frequency: every time the action hotbar is pressed
World name: Diabolos
Character name: Ragrar Flamesword
Retainer name: N/A
NPC name: N/A
Monster name: N/A
Class/Level: lv80 ALC
Party or solo: Solo
In-game time: N/A
Area and coordinates: anywhere
Housing:
Steps:
1. Assign any Ward Potion to a hotbar
2. Try to use ward potion via hotbar
3. Will result in message "Cannot execute at this time."

https://i.imgur.com/QSwIeSz.png