Fully reset the player's cell reference when the player is reset (#8021)

CHANGELOG.md

@@ -181,6 +181,7 @@
     Bug #7997: Can toggle perspective when paralyzed
     Bug #8002: Portable light sources held by creatures do not emit lighting
     Bug #8018: Potion effects should never explode and always apply on self
+    Bug #8021: Player's scale doesn't reset when starting a new game
     Feature #1415: Infinite fall failsafe
     Feature #2566: Handle NAM9 records for manual cell references
     Feature #3537: Shader-based water ripples

apps/openmw/mwworld/player.cpp

@@ -242,6 +242,11 @@ namespace MWWorld
 
     void Player::clear()
     {
+        ESM::CellRef cellRef;
+        cellRef.blank();
+        cellRef.mRefID = ESM::RefId::stringRefId("Player");
+        cellRef.mRefNum = mPlayer.mRef.getRefNum();
+        mPlayer = LiveCellRef<ESM::NPC>(cellRef, mPlayer.mBase);
         mCellStore = nullptr;
         mSign = ESM::RefId();
         mMarkedCell = nullptr;

apps/openmw/mwworld/worldimp.cpp

@@ -426,8 +426,6 @@ namespace MWWorld
         if (mPlayer)
         {
             mPlayer->clear();
-            mPlayer->setCell(nullptr);
-            mPlayer->getPlayer().getRefData() = RefData();
             mPlayer->set(mStore.get<ESM::NPC>().find(ESM::RefId::stringRefId("Player")));
         }