zoom and CMS connection share screen problem

Hellow,

There is a share screen problem in used between zoom and CMS connection meeting.

We have a meeting system: CMS and Cisco MX300 G2

When CMS connected to zoom and share screen from zoom at first, and then turn to share screen within CMS.

People who use zoom to meeting cannot saw the picture. But if share screen from CMS first then share function will good to the end.

Please help us to fix it out.

CMS ver. 2.9.7

MX300 G2 software ver. ce 9.15.16.5