I did disable boundaries. Just tried re-eneabling them.
Batteries are rechargable, stuck in a fresh one. The boundaries can see both controllers.
It's interesting to note the command to awaken the 2nd controller by clicking the '2nd Index Trigger is still there, but DeOVR is just ignoring all input from the Left controller. None of my other VR programs does it, and this only started yesterday after I finally relented and decided to allow the DeoVR to install its update.
I even tried the Steam version after it did the latest update and it doesn't read the left oculus controller either.
Bug code #5838