+, plus Type Conversion Behavior, Matlab Copilot Mismatch

With regard to type conversion behaivor, there appears to be a direct conflict Matlab's behavior and Matlab Copilot responses. See the command window interaction below and compare it to the claim in the Copilot response. I check help for the +, plus function and it does not address this topic. What is the expected behavior? This is not new behavior. I have it documented from several years ago.

Answer 1

[Walter Roberson]

The copilot descriptive text says specifically that the result of a+b will be integer. But then the comment says that it will be double. The text is correct: the results of pairwise mixed class arithmetic (when permitted at all) is the most restrictive class.