Rare item with 4 mods says no space for more crafted mods

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Item Class: Shields
Rarity: Rare
Brood Duty
Harmonic Spirit Shield
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Quality: +20% (augmented)
Chance to Block: 23%
Energy Shield: 78 (augmented)
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Requirements:
Level: 67
Int: 159
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Sockets: R-B-B
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Item Level: 84
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{ Implicit Modifier — Damage, Caster }
15(10-15)% increased Spell Damage (implicit)
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{ Master Crafted Prefix Modifier "Upgraded" (Rank: 4) — Life }
+70(56-70) to maximum Life (fractured)
{ Prefix Modifier "Runic" (Tier: 1) — Damage, Caster }
109(100-109)% increased Spell Damage
{ Suffix Modifier "of Tzteosh" (Tier: 1) — Elemental, Fire, Resistance }
+48(46-48)% to Fire Resistance
{ Suffix Modifier "of Haast" (Tier: 1) — Elemental, Cold, Resistance }
+48(46-48)% to Cold Resistance
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Fractured Item