Thanks for coming back to us. In that case, we have logged this issue in our GitHub issues as https://github.com/groupdocs-viewer/GroupDocs.Viewer-for-.NET/issues/180. We are in contact with the concerned team to check if there is any possible fix for this issue. We will get back to you in case of any updates.
Currently, we don’t have any information regarding this. However, as soon as we get the updates, we’ll share that with you.
Furthermore, would you please tell us what are the issues you are facing while migrating to the Moder UI front end? Also, please mention the differences you found in both front ends.