Preconditions: I've created my own property editor, filled some data and would like it to be saved

  "propertyEditors": [
    {
      "alias": "Timing",
      "name": "Timing",
      "icon": "icon-movie",
      "group": "Custom",
      "editor": {
        "view": "~/App_Plugins/MyPlugin/propertyEditors/courseTiming/courseTiming.html",
        "valueType": "JSON" //Dunno if it's required
      }
    }
  ],

Next i will create editor for my document type: RTE and Timing. Fill some data and save

So this is what umbraco POSTs to the sever in 'varians' array

{  
               "id":4288,
               "alias":"RTE Test",
               "value":" *Actually there is 2048 chars*"
            },

{  
               "id":4296,
               "alias":"courseTiming",
               "value":"If there is a string <=512 length, its saves OK. Otherwise it throws an exception below",

An error occured String or binary data would be truncated. The statement has been terminated.

Exception Details System.Data.SqlClient.SqlException: String or binary data would be truncated. The statement has been terminated. Stacktrace at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action1 wrapCloseInAction) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady) at System.Data.SqlClient.SqlDataReader.TryConsumeMetaData() at System.Data.SqlClient.SqlDataReader.getMetaData() at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString, Boolean isInternal, Boolean forDescribeParameterEncryption, Boolean shouldCacheForAlwaysEncrypted) at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, Boolean inRetry, SqlDataReader ds, Boolean describeParameterEncryptionRequest) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) at System.Data.SqlClient.SqlCommand.ExecuteScalar() at StackExchange.Profiling.Data.ProfiledDbCommand.ExecuteScalar() in C:\projects\dotnet\src\MiniProfiler.Shared\Data\ProfiledDbCommand.cs:line 334 at Umbraco.Core.Persistence.FaultHandling.FaultHandlingDbCommand.<ExecuteScalar>b__32_0() in d:\a\1\s\src\Umbraco.Core\Persistence\FaultHandling\RetryDbConnection.cs:line 214 at Umbraco.Core.Persistence.FaultHandling.FaultHandlingDbCommand.<>c__DisplayClass33_01.0() in d:\a\1\s\src\Umbraco.Core\Persistence\FaultHandling\RetryDbConnection.cs:line 222 at Umbraco.Core.Persistence.FaultHandling.RetryPolicy.ExecuteAction[TResult](Func1 func) in d:\a\1\s\src\Umbraco.Core\Persistence\FaultHandling\RetryPolicy.cs:line 172 at Umbraco.Core.Persistence.FaultHandling.FaultHandlingDbCommand.Execute[T](Func1 f) in d:\a\1\s\src\Umbraco.Core\Persistence\FaultHandling\RetryDbConnection.cs:line 219 at Umbraco.Core.Persistence.FaultHandling.FaultHandlingDbCommand.ExecuteScalar() in d:\a\1\s\src\Umbraco.Core\Persistence\FaultHandling\RetryDbConnection.cs:line 214 at NPoco.Database.ExecuteScalarHelper(DbCommand cmd) at NPoco.DatabaseTypes.SqlServerDatabaseType.ExecuteInsert[T](Database db, DbCommand cmd, String primaryKeyName, Boolean useOutputClause, T poco, Object[] args) at NPoco.Database.InsertImp[T](PocoData pocoData, String tableName, String primaryKeyName, Boolean autoIncrement, T poco) at NPoco.Database.Insert[T](String tableName, String primaryKeyName, Boolean autoIncrement, T poco) at NPoco.Database.Insert[T](T poco) at Umbraco.Core.Persistence.Repositories.Implement.DocumentRepository.PersistUpdatedItem(IContent entity) in d:\a\1\s\src\Umbraco.Core\Persistence\Repositories\Implement\DocumentRepository.cs:line 527 at Umbraco.Core.Cache.DefaultRepositoryCachePolicy2.Update(TEntity entity, Action1 persistUpdated) in d:\a\1\s\src\Umbraco.Core\Cache\DefaultRepositoryCachePolicy.cs:line 128 at Umbraco.Core.Persistence.Repositories.Implement.RepositoryBase2.Save(TEntity entity) in d:\a\1\s\src\Umbraco.Core\Persistence\Repositories\Implement\RepositoryBaseOfTIdTEntity.cs:line 140 at Umbraco.Core.Services.Implement.ContentService.Save(IContent content, Int32 userId, Boolean raiseEvents) in d:\a\1\s\src\Umbraco.Core\Services\Implement\ContentService.cs:line 793 at Umbraco.Web.Editors.ContentController.<>c__DisplayClass29_0.<PostSave>b__0(IContent content) in d:\a\1\s\src\Umbraco.Web\Editors\ContentController.cs:line 601 at Umbraco.Web.Editors.ContentController.SaveAndNotify(ContentItemSave contentItem, Func2 saveMethod, Int32 variantCount, Dictionary2 notifications, SimpleNotificationModel globalNotifications, String invariantSavedLocalizationKey, String variantSavedLocalizationKey, String cultureForInvariantErrors, Boolean& wasCancelled) in d:\a\1\s\src\Umbraco.Web\Editors\ContentController.cs:line 893 at Umbraco.Web.Editors.ContentController.PostSaveInternal(ContentItemSave contentItem, Func2 saveMethod, Func`2 mapToDisplay) in d:\a\1\s\src\Umbraco.Web\Editors\ContentController.cs:line 688 at Umbraco.Web.Editors.ContentController.PostSave(ContentItemSave contentItem) in d:\a\1\s\src\Umbraco.Web\Editors\ContentController.cs:line 599 at lambdamethod(Closure , Object , Object[] )

RTE values itself saves ok whatever length you choose. I've added it here just to show the difference. meanwhile my cusom editor's value cannot be more then 512 chars

Is there any suggestion how to avoid this bug?