1/1 heal bug

[Zalmon (Cotton)]

Bosses that have 1/1 attacks (Pianus / Papulatus / Zakum) have a strange effect on clerics. Sometimes after an attack the "Heal" spell targeting goes broke and only affects the caster despite being in a party which can lead to a wipe easily. Casting teleport seems to temporarily fix the issue but there's always a chance for this bug to happen again (sometimes right after fixing it!). 

Recreation 
Have a party with a cleric and go fight one of the bosses listed, keep eye on party members after 1/1 attacks and eventually the bug will occur.