StackOverflowException is sometimes thrown while a document containing annotations is updated in the main thread (e.g. by typing in it), and spell checking is enabled. The exception is thrown in a background thread, which call stack similar to this one: 2f89dfe8 00566287 Telerik.Windows.Documents.Cache.IntervalTree.IntervalNode`2[[System.__Canon, mscorlib],[Telerik.Windows.Documents.Cache.IntervalTree.HierarchicalIndexStruct, Telerik.Windows.Documents]]..ctor(System.Collections.Generic.IEnumerable`1<System.__Canon>) 2f89e084 00566287 Telerik.Windows.Documents.Cache.IntervalTree.IntervalNode`2[[System.__Canon, mscorlib], ... 2f89e4dc 00565cd8 Telerik.Windows.Documents.Cache.RadDocumentChildrenCache.RebuildTree() 2f89e52c 005658c1 Telerik.Windows.Documents.Cache.RadDocumentChildrenCache.Rebuild() 2f89e538 1413b704 Telerik.Windows.Documents.Cache.RadChildrenCacheBase`1[[System.__Canon, mscorlib]].EnsureValid() 2f89e568 00568c72 Telerik.Windows.Documents.Cache.RadDocumentChildrenCache.ContainsAnnotationMarkersOfType[[System.__Canon, mscorlib]]() 2f89e5c0 00568b29 Telerik.Windows.Documents.Cache.RadDocumentChildrenCache.GetContainingAnnotationRanges[[System.__Canon, mscorlib]](Telerik.Windows.Documents.Model.Inline, Boolean) 2f89e618 0056896f Telerik.Windows.Documents.Model.RadDocument.GetContainingAnnotationRanges[[System.__Canon, mscorlib]](Telerik.Windows.Documents.Model.Inline, System.Predicate`1<System.__Canon>, Boolean) 2f89e654 1b6b76d3 Telerik.Windows.Documents.Proofing.DocumentProofingManager.IsPositionInIgnoredRange(Telerik.Windows.Documents.DocumentPosition) 2f89e664 1b6b72e7 Telerik.Windows.Documents.Proofing.DocumentProofingManager+<SplitRangeToUpdate>d__2.MoveNext() 2f89e690 1b6b7019 Telerik.Windows.Documents.Proofing.DocumentProofingManager.UpdateIncorrectWordsList(Telerik.Windows.Documents.DocumentPosition, Telerik.Windows.Documents.DocumentPosition) 2f89e6c0 1b6b6ef2 Telerik.Windows.Documents.UI.Layers.TextDecorationLayers.ProofingErrorsDecorationUILayer+<>c__DisplayClass9.<MarkBoxesWithSpellingErrorsAsynch>b__5() 2f89e6d0 1b612094 Telerik.Windows.Documents.Utils.DelayedExecution.ExecuteAction(Boolean) 2f89e6e4 1b6b6e34 Telerik.Windows.Documents.Utils.DelayedExecution.OnThreadingTimer(System.Object) 2f89e704 65fa5b38 System.Threading.TimerQueueTimer.CallCallbackInContext(System.Object) 2f89e708 65fc4157 System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) 2f89e774 65fc4096 System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) 2f89e788 65fa5a81 System.Threading.TimerQueueTimer.CallCallback() 2f89e7bc 65fa593c System.Threading.TimerQueueTimer.Fire() 2f89e7fc 65fa5861 System.Threading.TimerQueue.FireNextTimers() 2f89e83c 65fa5724 System.Threading.TimerQueue.AppDomainTimerCallback() 2f89ea68 66d73de2 [DebuggerU2MCatchHandlerFrame: 2f89ea68] Note: Until 2017 R2 SP1 release StackOverflowException is thrown, after this release an ArgumentException should be thrown.
Declined: Not reproducible anymore.