Adafruit Trinket M0 (C/W RGB DotStar LED)

I’m Confused!
I updated the on board CircuitPython 2.x to 3.x and the RGB DotStar LED started to behave differently. The example Python script is the same in both versions.
Any ideas?

The ItsyBitsy M0 has the same behaviour when updating CP 2.x to 3.x