Low level topic: Tracking local state changes

Hello guys, we are tracking a hideous bug where some local state key transitions to a value that we consider invalid, and we haven’t been able to pinpoint the source with dry run dumps. Is there any technique of low-level tracking state-changes for an account? We are using sandbox.
Thanks in advance.

You can debug using: Debugging smart contracts - Algorand Developer Portal

I’m interested in connecting VSCode to algod instance as described in algorand/sandbox: Algorand node sandbox (github.com) but I couldnt find the golang source to be able to debug. Any suggestion? thanks.