Annotation toolbar not visible to participants during whiteboard sharing from desktop

Since last 10 days my meeting participants are not able to see the annotation toolbar on the shared whiteboard for a meeting on my desktop. I have updated my Zoom Workplace to the latest version but this does not help. I have checked the meeting settings also wherein I have not checked “ Only host can annotate”. I tried to start a meeting from my phone and joined the meeting from my desktop ( without signing in) from the web by entering the meeting details and I could see the annotation tool bar on the whiteboard shared on the phone.