When I tried to use the gesture unit with Atom Matrix, the matrix LED went out and it did not work.
According to Copilot, in UIFlow2, enabling I2C disables the matrix LED by design, so they cannot be used at the same time.
It seems that it's not a hardware issue, and it can be used with Arduino IDE or UIFlow1.

There are units that are only supported in UIFlow2, so I would like the limitation of not being able to use it simultaneously in UIFlow2 to be improved.