Created attachment 324420 [details] [Image] Problem Repro: 1. Launch MiniBrowser on Mac. 2. Open Web Inspector and dock it to the right side of the browser window. Result: See screenshot. Web Inspector header is cut off and not interactable.
<rdar://problem/35098664>
Seems like this may be related to bug 142892. At https://trac.webkit.org/browser/webkit/trunk/Source/WebKit/UIProcess/mac/WebInspectorProxyMac.mm#L508, inspectedView is a WKWebView and thus insetExcludingBanners is always 0. NSHeight(parentBounds) has the same value as inspectedViewTop, and this value is large than the actual available height.
Seems like this bug no longer occurs.