[Class - Talent - Beast Mastery Hunter] Mend Pet is not showing in the Spell bar or in the Spellbook

[ArkusTele]

Quest/Spell/Item/Creature(ID) The ID is:

Spell ID: 343242 Icon ID: 132179

The Current Behaviour is as following:

Mend Pet is not showing in the Spellbar as intended when enabled from Talent Tree when taking Talent "Wilderness Medicine" from Hunter Talent Tree

Expected Behaviour should be as following:

Screenshot/Video (IMGUR/YOUTUBE):

Additional Information:

[ArkusTele]