Web site ignoring mouse move events.

[rjxray]

I'm posting on a long shot that someone may be able to help with this strange issue:

At https://osmbuildings.org/ clicking and dragging should move the view around but in our CEF app its doing nothing.

We have the option to use off screen rendering with OnPaint and SendMouseClickEvent/SendMouseMoveEvent or to use a separate CEF/Chromium window with the mouse operating directly in the window. Clicking and dragging doesn't work in either case.
On every other web site that I've tried, clicking and dragging works OK so its something specific to this site.

We've tried looking with devtools via the remote_debugging_port but can't identify anything specific at this site. Strangely as soon as we connect devtools clicking and dragging works OK.

In cefclient it works OK with or without off screen rendering but I can't identify what we are doing differently.

Any ideas at all would be great

We are using CEF 5414 with Windows 11, we have the same issue with earlier versions 4368 and 5060.

[rjxray]

We are seeing this issue because we also support touch inputs.
Its a bug in the website as described at https://www.w3.org/WAI/WCAG21/Techniques/failures/F98