First of all, please note that we don’t advise trying pre-release builds of ESP-IDF unless you are prepared to do non-trivial troubleshooting, as they are often unreliable and might not be backward compatible.
We normally test VisualGDB with stable IDF releases only, as the internal structure of the pre-release IDF branches changes way too often to be reasonably supported.
That said, we have rechecked the current pre-release v3.3 branch and updated VisualGDB to accommodate the changes introduced in it. Please try this build [VisualGDB-5.4.103.3003.msi].
Also if you encounter problems with CMake projects with this IDF version, please try applying the fix from the github issue we created.