toMono bug?

I am trying to analyze the audio signal from the microphone. I simply added a AudioIn and connected to ToMono. No data comes out of ToMono. I can see data in the AudioIn ouput, How do I troubleshoot this?

Can you try to just patch along and connect now a Meter? Maybe it works fine, and the node needs to be connected downstream to update its IOBox.

Probably related to this:

I connected AudioIn to ToMono and then ToMono to Meter and now I can see the values. Thank you