"OverflowException" is thrown and user's registered assets are not displayed when "My assets" dropdown is selected in Package manager window. Refer to the attached video.

Steps to reproduce:
1) Create a new project
2) Window > Package Manager
3) Select "My Assets" in "All packages" dropdown
4) Sign in to Unity with registered account details

Actual result:
"OverflowException" is thrown and user's registered assets are not displayed

Expected result: User's registered assets are displayed

Occurring in: 2019.3.0a11
Working fine in: 2019.3.0a10, 2019.2.0f1

Environment: Only on Windows

Stack trace:
OverflowException: Value was either too large or too small for a character.
System.Convert.ToChar (System.Int32 value) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
UnityEditor.Json+Parser.get_PeekChar () (at <7b513489a0a84a38ba47d891191a9f18>:0)
UnityEditor.Json+Parser.EatWhitespace () (at <7b513489a0a84a38ba47d891191a9f18>:0)
UnityEditor.Json+Parser.get_NextToken () (at <7b513489a0a84a38ba47d891191a9f18>:0)
UnityEditor.Json+Parser.ParseValue () (at <7b513489a0a84a38ba47d891191a9f18>:0)
UnityEditor.Json+Parser.Parse (System.String jsonString) (at <7b513489a0a84a38ba47d891191a9f18>:0)
UnityEditor.Json.Deserialize (System.String json) (at <7b513489a0a84a38ba47d891191a9f18>:0)
UnityEditor.PackageManager.UI.AssetStore.AssetStoreClient+AssetStoreClientInternal.GetLocalPackages () (at <7b513489a0a84a38ba47d891191a9f18>:0)
UnityEditor.PackageManager.UI.AssetStore.AssetStoreClient+AssetStoreClientInternal.List (System.Int32 offset, System.Int32 limit, System.String searchText, System.Boolean fetchDetails) (at <7b513489a0a84a38ba47d891191a9f18>:0)
UnityEditor.PackageManager.UI.PageManager+PageManagerInternal.Refresh (UnityEditor.PackageManager.UI.RefreshOptions options) (at <7b513489a0a84a38ba47d891191a9f18>:0)
UnityEditor.PackageManager.UI.PackageStatusBar+<>c.<.ctor>b__4_0 () (at <7b513489a0a84a38ba47d891191a9f18>:0)
UnityEngine.UIElements.Clickable.Invoke (UnityEngine.UIElements.EventBase evt) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.Clickable.OnMouseUp (UnityEngine.UIElements.MouseUpEvent evt) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.EventCallbackFunctor`1[TEventType].Invoke (UnityEngine.UIElements.EventBase evt) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.EventCallbackRegistry.InvokeCallbacks (UnityEngine.UIElements.EventBase evt) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.CallbackEventHandler.HandleEvent (UnityEngine.UIElements.EventBase evt) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.CallbackEventHandler.HandleEventAtTargetPhase (UnityEngine.UIElements.EventBase evt) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.MouseCaptureDispatchingStrategy.DispatchEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.EventDispatcher.ProcessEventQueue () (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.EventDispatcher.OpenGate () (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.EventDispatcherGate.Dispose () (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.EventDispatcher.ProcessEvent (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.EventDispatcher.Dispatch (UnityEngine.UIElements.EventBase evt, UnityEngine.UIElements.IPanel panel, UnityEngine.UIElements.DispatchMode dispatchMode) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.BaseVisualElementPanel.SendEvent (UnityEngine.UIElements.EventBase e, UnityEngine.UIElements.DispatchMode dispatchMode) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.UIElements.UIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at <08a5816fa8214e36a47be4b6d82efaf3>:0)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at <8994c56cec034f25883448a68ddcebc4>:0)