If we click with normal trial key on ominous trial we are getting an Under lock and key advancement, but no drop (as expected).
Linked issues
is duplicated by 5
MC-269970
Under lock and key advancement still applied if vault does not open
Resolved
MC-270012
The player gets the "under lock and key" advancment while rigth clicking a ominus vault with a normal key
Resolved
MC-270039
Under Lock and Key advancement not properly checking if a vault has been opened
Resolved
MC-270070
Attempting to open an ominous vault with a non-ominous trial key grants advancement
Resolved
MC-270081
(Duplicate) Attempting to unlock an Ominous Vault still applies Under Lock and Key
Resolved
relates to 3
MC-269641
Under Lock and Key advancement does not check for vault key_item
Resolved
MC-269957
Using an ominous trial key on an ominous vault does not grant the "Under Lock and Key" advancement
Resolved
MC-270062
Ominous vault created by player using /setblock or debug stick opens with a normal vault key and has normal vault loot
Open
Can confirm.