Spell queue seems nearly fixed right now,
There's few abilities which aren't affected by spell queue i.e. Druids healing touch, (It sometimes doesn't get queue'd even if being spammed)
And i also noticed this bug, which is :
When user casts an ability and if it has longer cast timer than Gcd (example 2 sec cast like starfire) If the ability is spammed, after few seconds there will be a second GCD while the first ability is being casted (The 2nd gcd triggers from the queue'd ability but the second ability wasn't used, it was only queue'd)
Note: In case i am wrong, then just ignore this,