When I select any annotations then this occurs. And even if I refresh page and then try to select any annotation then it occurs. Annotation flicking is being observed today first time. It was never before happened. Suddenly this started creating issues.
In the future, please fill out the template properly so we do not need to go back and forth asking and answering questions. In the future I will close any tickets that do not fill out the template or do not provide enough information.
What version of Express are you using? Does this happen on a specific document? Also, are those custom annotations? If so, can you please provide the code you use to create those annotations.