When switching to Source View - nothing is shown. I have recently reinstalled my office laptop, and I uninstalled / reinstalled Radzen for VS - but the issue persists.
Note: I tried to upload the recording as a ZIP to the forum. The zip size is 1.19 MB. I get an error message saying that I can only upload files that are less than 10 MB - so there is an issue here as well.
Your video shows something strange - in split mode and vertical view only the source code is visible - no design view. Did you resize any of the panes? This could explain why source view only is not visible. In any case we can't reproduce this issue locally so it could be related to your actual page and app - you can send us your app to info@radzen.com (use a cloud storage service to upload the project).
This is a recent change in the forum software we use. Will investigate how to address it.
UPDATE: uploads should work now.