Hi
Thanks for getting back in touch. I understand that it is a difficult one to determine.. we are struggling to work this one out too.
There is no errors in the google chrome console when a user right clicks therefore there is no stack trace errors that i can provide for you guys.
I have added to this a zip which contains the cshtml markup for the page and the partial page that the application uses along with a screenshot.
In the screenshot you can see that there is a red circle around a small white dot which is appearing for them. Again this is only occurring for a minority of users as the vast majority can use this functionality with ease.
I Hope this helps you guys.
We have asked that they Update their chrome along with clearing cache, cookies, local storage and session storage with no prevail.
Thanks
Paul
Attachment:
Syncfusion_Issue_20200527_4ba1593f.zip