hmm might not be a bug...i think i also experience this few times during ifrit shield but i dont really give a damn..else i just off their skill using the obey command because all my pet's aoe can wake up sleep and using obey just only allows them to normal atk mostly...guess is not bug on your side but rather an improvement need to be made instead by SE

yea true. guess i just have to live with it... will be better if i can choose when my pixie cast the spells tho lol... but i really like pet healing damn fun. However the downside is if boss does those aoe stacking damage. Like in Aurum Vale need to keep re-summoning my pixie during that fight.

I just let my fairy do whatever she wants lol.... its like a backup healing u have on the move.
Love it.

early days in WoW, warlock pets suffering the same issue as well for boss aoe dmg and cleave...this has been fixed by them...i guess SE will fix it soon or later and add the ability of auto casting for each of pet skill (if able)

but if u macro it really makes a difference much better lets say if u use support fairy and ur group dps consists of bard and (Dragoon or monk) the fairy only cast spell haste and will ignore skill haste. And will always auto cast spell haste to overwrite skill haste. Which I dont like bout that... but at least there is like a 1 sec global cooldown for embrace(heal) so i can control that.

Never use the support fairy yet in dungeons, just EoS atm so far. I just order it move,follow and place only, having fairy certainly helps but i can managed to solo
heal w/o the fairies tough.

i think depending on your level.. i find it easier to heal around lvl 35 and above as u rarely run out of mana...with mana regenerating abilities.