Also set last position of animators to -1 when mappers are invalid

Author: Banane9

CommunityBugFixCollection/PauseAnimatorUpdates.cs

@@ -19,17 +19,21 @@ private static bool Prefix(Animator __instance)
 
             __instance._playback.ClipLength = (__instance.Clip.Asset?.Data?.GlobalDuration).GetValueOrDefault();
 
-            if (!__instance._fieldMappersValid)
-                __instance.GenerateFieldMappers();
-
             if (!_lastPositionByAnimator.TryGetValue(__instance, out var lastPosition))
             {
-                // Make sure that initial state is always applied,
+                // Make sure that initial state is always applied for new animators,
                 // since playback position can't be < 0
                 lastPosition = -1;
                 _lastPositionByAnimator.Add(__instance, lastPosition);
             }
 
+            if (!__instance._fieldMappersValid)
+            {
+                // Also make sure that initial state is always applied after the field mappers change
+                lastPosition.Value = -1;
+                __instance.GenerateFieldMappers();
+            }
+
             if (lastPosition != __instance.Position)
             {
                 var position = lastPosition.Value = __instance.Position;