Cannot drag scrollbar

[alexdima]

Testing #93742

• click on the scrollbar
• try to scroll by dragging the scrollbar
• observe that over issue results the scrollbar cannot be dragged

[rebornix]

When the focus goes into the webview, the scrollbar no longer receives mouse move/drag events. We should probably emit mouse move (with mouse button pressed) from the webview and send them to the scrollbar.

[alexdima]

@rebornix An alternative would be for the scrollbar to emit some kind of event that it is currently dragging and then you can render a transparent <div> that captures mouse moves from the entire page.

In fact, I wonder if this isn't a bug already when dragging from an editor's scrollbar and moving the mouse over a webview?

[rebornix]

Yes, it’s a generic issue for webview and your solution should work for all webviews.