This is a known issue in Essential Studio 184.108.40.206 that has been fixed in version 220.127.116.11.
Please perform the following steps to uninstall the Syncfusion entries from the Visual Studio toolbox:
Place the ToolboxUninstall.exe file in the path below
Run ToolboxUninstall.exe to uninstall all the Syncfusion entries from the Visual Studio toolbox.
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