RX8R Pro Failing SBUS?

I’ve been working this problem for a full day and am stuck.

FrSky RXR8 Pro receiver SBUS Out to RC IN not working.

  1. Have tested on multiple FCs, Pixhawk, Cube Orange, mRO X2.1
  2. Individual channel outputs through a PPM into FC works fine
  3. Have updated firmware on RXR8
  4. Connecting logic analyzer see simultaneous output from PPM & SBUS (attached image)

Anyone have ideas on next steps?

*Edit - Top plot is output after external PPM combining all 8 channels from RXR8, bottom is SBUS out… here’s a better image

**edit2 - Added closeup view on SBUS

Thanks in advance