WebBrowserComponent swallows mouse events

[olilarkin]

WebBrowserComponent mouse focus/resizing issue on 10.11

I've got an issue with the WebBrowserComponent on 10.11, which isn't a problem on 10.9. It seems that it steals mouse focus as soon as the mouse enters the component (even if dragging on another component). This means that when I am trying to resize it using StretchableLayout components, I can't make the WebBrowserComponent's area smaller, without going exteremly slowly and staying over the StretchableLayoutResizerBar. hopefully this video makes the issue a little clearer: https://dl.dropboxus…