You should carefully check the references to all Telerik controls in your project and make sure that they are the same version considering the suffix as well (.20 or .40). Better yet, you can remove all references and add them anew by using the DLLs from your fresh installation. Delete the license.licx file. After that, you should rebuild your project, close Visual Studio, and open it again to make sure that no references are kept in the memory by Visual Studio.
I hope this information helps.
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Posted on:17 Sep 2020 00:11
I have updated to R3 2020 this morning and have tested this with the UseSystemPasswordChar set to true, yet it allows the Ctrl+C to copy the hidden password. What am I missing?
Posted on:20 Aug 2020 09:11
A workaround, until the issue is fixed, would be to disable the context menu in the text field and to clear the clipboard on KeyDown event, when Ctrl+X and Ctrl+C are used.