Created attachment 376702 [details] The top of the page is not below the separator. Can't scroll to the real top within the 2nd web view. WKWebView does not resize properly when used in a NSSplitView that contain more than 1 item and with vertical property set to NO. The top for the page within the 2nd webview is not below the separator. Moving the separator resizes the 1st webview but not the 2nd one. 2nd webview is also not scrollable. This does not occur when vertical property set to YES. How to reproduce? - set a NSsplitview to fit a NSWindow. - add 2 WkWebView to the split view.
<rdar://problem/54480528>