I'm really at a loss. Sending 127 is great--that should work fine. One thing I've noticed in your log files is that
Automation permission granted for com.adobe.LightroomClassicCC7 is missing from many of your runs. That message should always appear in the log for MacOS users if you've attempted to send a keystroke.
This makes me wonder if you have profile issues, and the profile that's active is not what you expected. When you're having trouble sending keystrokes, recheck that the mapping is correct by looking at the app window. If the mapping is incorrect, we've found your problem. Otherwise, I don't know.