Xb3-24z8ut-j brownout issue

It is known that there is a brownout issue with some ZB3 modules (link below). Digi reported that this issue only affects modules with revison <B. However, we have experienced this issue with modules of revision C. (Brownout issue)
Can anyone provide some information about it?

Thanks in advance,

GL82, you still can’t operate the module outside of VCC limits. doing so can cause undesired effects.