XIAO nRF52840 Sense with ePaper on Zephyr RTOS not working

Has anyone been able to get an ePaper display like the 2.9 inch monochrome (GDEY029T94) working on the XIAO nRF52840 Sense on the ePaper Breakout board running on Zephyr RTOS? The Arduino SeeedGFX>ePaper>Basic>HelloWorld example works fine. When running on RTOS, the display “clear” works and setting the (0,0) pixel works but all other pixels are spread over the top portion of the display.