diff --git a/src/Umbraco.Cms.Api.Management/Security/BackOfficeApplicationManager.cs b/src/Umbraco.Cms.Api.Management/Security/BackOfficeApplicationManager.cs
index 091eecadfe..615515a423 100644
--- a/src/Umbraco.Cms.Api.Management/Security/BackOfficeApplicationManager.cs
+++ b/src/Umbraco.Cms.Api.Management/Security/BackOfficeApplicationManager.cs
@@ -97,7 +97,7 @@ public class BackOfficeApplicationManager : IBackOfficeApplicationManager
                     ClientId = Constants.OauthClientIds.Postman,
                     RedirectUris =
                     {
-                        new Uri("https://oauth.pstmn.io/v1/callback")
+                        new Uri("https://oauth.pstmn.io/v1/callback"), new Uri("https://oauth.pstmn.io/v1/browser-callback")
                     },
                     Type = OpenIddictConstants.ClientTypes.Public,
                     Permissions =
diff --git a/src/Umbraco.Infrastructure/Serialization/JsonBoolConverter.cs b/src/Umbraco.Infrastructure/Serialization/JsonBoolConverter.cs
new file mode 100644
index 0000000000..0dbac1cbc5
--- /dev/null
+++ b/src/Umbraco.Infrastructure/Serialization/JsonBoolConverter.cs
@@ -0,0 +1,36 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Umbraco.Cms.Infrastructure.Serialization;
+
+public class JsonBoolConverter : JsonConverter<bool>
+{
+    public override void Write(Utf8JsonWriter writer, bool value, JsonSerializerOptions options) =>
+        writer.WriteBooleanValue(value);
+
+    public override bool Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) =>
+        reader.TokenType switch
+        {
+            JsonTokenType.True => true,
+            JsonTokenType.False => false,
+            JsonTokenType.String => ParseString(ref reader),
+            JsonTokenType.Number => reader.TryGetInt64(out long l) ? Convert.ToBoolean(l) : reader.TryGetDouble(out double d) ? Convert.ToBoolean(d) : false,
+            _ => throw new JsonException(),
+        };
+
+    private bool ParseString(ref Utf8JsonReader reader)
+    {
+        var value = reader.GetString();
+        if (bool.TryParse(value, out var b))
+        {
+            return b;
+        }
+
+        if (int.TryParse(value, out var i))
+        {
+            return Convert.ToBoolean(i);
+        }
+
+        throw new JsonException();
+    }
+}
diff --git a/src/Umbraco.Infrastructure/Serialization/SystemTextConfigurationEditorJsonSerializer.cs b/src/Umbraco.Infrastructure/Serialization/SystemTextConfigurationEditorJsonSerializer.cs
index 8192f38acd..1141622cb0 100644
--- a/src/Umbraco.Infrastructure/Serialization/SystemTextConfigurationEditorJsonSerializer.cs
+++ b/src/Umbraco.Infrastructure/Serialization/SystemTextConfigurationEditorJsonSerializer.cs
@@ -27,6 +27,7 @@ public class SystemTextConfigurationEditorJsonSerializer : IConfigurationEditorJ
         _jsonSerializerOptions.Converters.Add(new JsonObjectConverter());
         _jsonSerializerOptions.Converters.Add(new JsonUdiConverter());
         _jsonSerializerOptions.Converters.Add(new JsonGuidUdiConverter());
+        _jsonSerializerOptions.Converters.Add(new JsonBoolConverter());
     }
 
     public string Serialize(object? input) => JsonSerializer.Serialize(input, _jsonSerializerOptions);