DigiUno + 6812b Eco, first 60 LED's running some different mode?

Can’t figure out why the first 60 LEDs on my 150 LED strip are somehow running a different program than the rest of the strip. Seems responsive and working otherwise with v0.12 peek mode turned on showing the correct LEDS lit up including the first 60 that are apparently running some different mode. I’ve deleted all segments and started anew. still the same behavior. any ideas?

oh, and if I reverse order then the other end of the strip behaves the same way… so all LEDs are working, and data com seems to be fine, since the peek mode shows the pattern correctly.