#397 Missile Barrage effect does not apply to Arcane Missiles if the proc is consumed when there is less than 1 second left on its duration.

Status: Fixed · Area: Classes & Specs · Mage

Missile Barrage's haste is lost if used with under a second left, so Arcane Missiles fire only 3 of 5 missiles.

Current behavior

The Missile Barrage effect fails to apply to Arcane Missiles if the buff proc is consumed when there is less than 1 second remaining on its duration. The haste portion of the proc is completely lost, but Arcane Missiles channels at its normal, unbuffed speed with a 2.5s duration, and only produces 3 of the 5 expected missiles.

Expected behavior

The Missile Barrage effect should successfully apply to Arcane Missiles regardless of how much duration remains on the proc, as long as the spell cast begins before the buff officially expires.

How to reproduce

1. Spec into the Missile Barrage talent and cast baseline spells (like Arcane Blast) until the Missile Barrage proc triggers.
2. Track the duration of the buff closely and wait for the buff timer to dip below 1.0 second remaining.
3. Cast Arcane Missiles while the proc is active but within that <1s window.
4. The buff aura is immediately consumed and removed from the UI, but the resulting Arcane Missiles channel fires at a regular, 1-second unbuffed interval but with a 2.5s duration instead of the rapid 0.5-second tick speed.