I did a little digging with AI.  Is your tested app written in Delphi?  If so, which version of Delphi is being used?  Check the link below to ensure support.
https://support.smartbear.com/testcomplete/docs/app-testing/desktop/delphi/about.html?utm_source=chatgpt.com
You could attempt to work around the problem by not using the spy on this component.  If you can find the closest unique parent object you could use the findchild method to reference and automate the interaction with the component with the .keys method.
I agree with Hassan_Ballan,  you should likely open a support case.  👍
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