Core/Spells: added a missing check in Unit::IsMovementPreventedByCasting

src/server/game/Entities/Unit/Unit.cpp

@@ -2894,6 +2894,10 @@ bool Unit::IsMovementPreventedByCasting() const
     if (!HasUnitState(UNIT_STATE_CASTING))
         return false;
 
+    if (Spell* spell = m_currentSpells[CURRENT_GENERIC_SPELL])
+        if (HasAuraTypeWithAffectMask(SPELL_AURA_CAST_WHILE_WALKING, spell->GetSpellInfo()))
+            return false;
+
     // channeled spells during channel stage (after the initial cast timer) allow movement with a specific spell attribute
     if (Spell* spell = m_currentSpells[CURRENT_CHANNELED_SPELL])
         if (spell->getState() != SPELL_STATE_FINISHED && spell->IsChannelActive())