I tried both adding a custom word to the dictionary and using the built-in German dictionary and they both seem to work fine. I am attaching two videos from my experiments as a reference. Am I missing something? Is there anything else that I need to do in order to reproduce the issue? Is the behavior demonstrated in my videos the desired result? Also, can you confirm you do not have the AllowAddCustom property of the RadSpell set to false in your project?
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