DRV10987: DRV10987 motor start up fail randomly

Tool/software:

Hi team, 

my customer is using DRV10987 for motor driver. The SCH is as below, 

but customer finds the motor can not start up successfully randomly. The ratio is about 20%. they tried to switch the motor drive IC. The issue follows IC. 

below is the test wave on PIN 9(yellow) and PIN 2 during start up failure. 

any suggestions for debug? Thanks.