Part of the symbol's line weight doesn't change

I draw a square and arrow symbol from scratch in Regular / small

when view light and small… the arrow’s line weight changed from 3 pts to 1.5 pts. But the rounded rec remaining at 3 pts.

I’ve worked to unify the default line widths (including the ratio of widths between the different symbol weights) in the latest version. (Look out for a TestFlight release later today)