Disclaimer: I'm also posting this as new topic because the answer-functionality in this board is broken apparently and I wanted to raise awareness that this seems to be a serious issue affecting more developers.
As others have noted I'm also seeing this exception heavily since around June 8th. To repeat, this is affecting a huge number of our players (#1 exceptions filtered by affected users) and it started to appear out of nowhere (no app update or anything).
PlayFab SDK Version: 2.90.200713 Unity Version: 2021.3.19f1
Callstack: PlayFab.Json.PlayFabSimpleJson.DeserializeObject (System.String json) (at :0) PlayFab.Json.PlayFabSimpleJson.DeserializeObject (System.String json, System.Type type, PlayFab.Json.IJsonSerializerStrategy jsonSerializerStrategy) (at :0) PlayFab.Json.PlayFabSimpleJson.DeserializeObject[T] (System.String json, PlayFab.Json.IJsonSerializerStrategy jsonSerializerStrategy) (at :0) PlayFab.Internal.PlayFabUnityHttp.OnResponse (System.String response, PlayFab.Internal.CallRequestContainer reqContainer) (at :0) PlayFab.Internal.PlayFabUnityHttp+d_12.MoveNext () (at :0) UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at :0) PlayFab.Internal.PlayFabUnityHttp:OnResponse(String, CallRequestContainer) PlayFab.Internal.d_12:MoveNext() UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr)
