diff --git a/libcef/browser/views/browser_view_view.h b/libcef/browser/views/browser_view_view.h
index 955bd709e..bd47b9e0a 100644
--- a/libcef/browser/views/browser_view_view.h
+++ b/libcef/browser/views/browser_view_view.h
@@ -16,7 +16,13 @@
 // CefViewView template.
 class WebViewEx : public views::WebView {
  public:
-  WebViewEx() : views::WebView(nullptr) {}
+  WebViewEx() : views::WebView(nullptr) {
+    // Mouse events on draggable regions will not be handled by the WebView.
+    // Avoid the resulting DCHECK in NativeViewHost::OnMousePressed by
+    // configuring the NativeViewHost not to process events via the view
+    // hierarchy.
+    holder()->SetCanProcessEventsWithinSubtree(false);
+  }
 };
 
 class CefBrowserViewView
diff --git a/patch/patches/chrome_runtime_views.patch b/patch/patches/chrome_runtime_views.patch
index dab984bb7..c69cd0ddf 100644
--- a/patch/patches/chrome_runtime_views.patch
+++ b/patch/patches/chrome_runtime_views.patch
@@ -356,6 +356,22 @@ index 5f8af5f46bf46..54aba6eb904d6 100644
    int browser_view_width = vertical_layout_rect_.width();
    bool toolbar_visible = delegate_->IsToolbarVisible();
    int height = toolbar_visible ? toolbar_->GetPreferredSize().height() : 0;
+diff --git chrome/browser/ui/views/frame/contents_web_view.cc chrome/browser/ui/views/frame/contents_web_view.cc
+index 5f985efa03120..cd38b49974ecb 100644
+--- chrome/browser/ui/views/frame/contents_web_view.cc
++++ chrome/browser/ui/views/frame/contents_web_view.cc
+@@ -24,6 +24,11 @@
+ ContentsWebView::ContentsWebView(content::BrowserContext* browser_context)
+     : views::WebView(browser_context),
+       status_bubble_(nullptr) {
++  // Mouse events on draggable regions will not be handled by the WebView.
++  // Avoid the resulting DCHECK in NativeViewHost::OnMousePressed by
++  // configuring the NativeViewHost not to process events via the view
++  // hierarchy.
++  holder()->SetCanProcessEventsWithinSubtree(false);
+ }
+ 
+ ContentsWebView::~ContentsWebView() {
 diff --git chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc
 index 9a42c3bd2207b..4de0fb1b33bce 100644
 --- chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc