switch use rate limit will drop match

/interface ethernet switch rule add dst-address=x.x.x.x mac-protocol=ip ports=sfp-sfpplus1 rate=10M switch=switch1

before this config,i can ping reach x.x.x.x,if i config this rate limit,ping unreach x.x.x.x
only this device have this problem,but not use rate limit all will all work fine!
other the same device at the same config,work fine!
this device broken?
i try to up to 6.49.7 ,7.6 problem always.
i try to reset config,and only use rate limit will have the same problem.
i can not make sure it is hardware problem,becouse not use rate limit all work fine.

my device it is CRS328-24P-4S+