fix(Core/Player): Paladin's Seal of Righteousness (#6727)

src/server/game/Entities/Player/Player.cpp

@@ -24158,7 +24158,27 @@ void Player::learnSkillRewardedSpells(uint32 skill_id, uint32 skill_value)
             removeSpell(pAbility->Spell, GetActiveSpec(), true);
         }
         // need learn
-        else if (!IsInWorld())
+        else
+        {
+            //used to avoid double Seal of Righteousness on paladins, it's the only player spell which has both spell and forward spell in auto learn
+            if (pAbility->AcquireMethod == SKILL_LINE_ABILITY_LEARNED_ON_SKILL_LEARN && pAbility->SupercededBySpell)
+            {
+                bool skipCurrent = false;
+                auto bounds = sSpellMgr->GetSkillLineAbilityMapBounds(pAbility->SupercededBySpell);
+                for (auto itr = bounds.first; itr != bounds.second; ++itr)
+                {
+                    if (itr->second->AcquireMethod == SKILL_LINE_ABILITY_LEARNED_ON_SKILL_LEARN && skill_value >= itr->second->MinSkillLineRank)
+                    {
+                        skipCurrent = true;
+                        break;
+                    }
+                }
+                if (skipCurrent)
+                {
+                    continue;
+                }
+            }
+            if (!IsInWorld())
             {
                 addSpell(pAbility->Spell, SPEC_MASK_ALL, true, true, false);
             }
@@ -24167,6 +24187,7 @@ void Player::learnSkillRewardedSpells(uint32 skill_id, uint32 skill_value)
                 learnSpell(pAbility->Spell);
             }
         }
+    }
 }
 
 void Player::GetAurasForTarget(Unit* target) // pussywizard: contact before changing ANYTHING!