route · Oct 28, 2026 · Oct 21, 2026 · Oct 27, 2026 · Oct 27, 2026 · Oct 28, 2026
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -7,6 +7,8 @@
 ### Fixed
 - `set_viewport` and `resize` turned touch emulation off on every desktop viewport, which reset hover and pointer and
   undid `--blink-settings` overrides. `mobile:` defaults to `nil` and leaves touch as is, `false` turns it off [#664]
+- A click or navigation timed out when the last loading iframe moved to another process, e.g. submitting a form that
+  opens an inline PDF in Chrome 145+, where the PDF viewer runs out of process [#672]
 
 ### Removed
 

diff --git a/lib/ferrum/page/frames.rb b/lib/ferrum/page/frames.rb
@@ -104,6 +104,7 @@ def subscribe_frame_detached
             frame.execution_id = nil
           else
             @frames.delete(params["frameId"])
+            @event.set if @main_frame.idle? && frame&.idle? == false && frames.size == 1
           end
         end
       end

diff --git a/spec/frame_spec.rb b/spec/frame_spec.rb
@@ -125,6 +125,29 @@
     end
   end
 
+  it "finishes a form submission that opens an inline PDF" do
+    page.go_to("/inline_pdf")
+    page.at_css("button").click
+
+    expect(page.current_url).to eq(base_url("/inline.pdf"))
+    expect(page.network.response.content_type).to eq("application/pdf")
+  end
+
+  it "keeps waiting for a loading frame when another one is removed" do
+    page.go_to("/removed_iframe")
+    page.at_css("button").click
+
+    expect(page.evaluate("document.querySelector('iframe').contentWindow.location.pathname"))
+      .to eq("/show_cookies/set_cookie_slow")
+  end
+
+  it "waits for a navigation a click starts after removing a loaded frame" do
+    page.go_to("/remove_iframe_and_navigate")
+    page.at_css("button").click
+
+    expect(page.evaluate("location.pathname")).to eq("/slow")
+  end
+
   context "with lazy loading iframes" do
     it "does not block visit on lazy iframe" do
       expect { page.go_to("/lazy_iframe") }.not_to raise_error

diff --git a/spec/support/application.rb b/spec/support/application.rb
@@ -72,6 +72,12 @@ def authorized?(login, password)
                 filename: "attachment.pdf"
     end
 
+    post "/inline.pdf" do
+      send_file File.join(FERRUM_APP, "static", "attachment.pdf"),
+                disposition: :inline,
+                filename: "inline.pdf"
+    end
+
     get "/foo" do
       "Another World"
     end

diff --git a/spec/support/views/inline_pdf.erb b/spec/support/views/inline_pdf.erb
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<html>
+  <body>
+    <form action="/inline.pdf" method="post">
+      <button type="submit">Open PDF</button>
+    </form>
+  </body>
+</html>
diff --git a/spec/support/views/remove_iframe_and_navigate.erb b/spec/support/views/remove_iframe_and_navigate.erb
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+  <body>
+    <iframe src="/slow"></iframe>
+    <button>Remove iframe and navigate</button>
+
+    <script>
+      document.querySelector("button").addEventListener("click", function () {
+        document.querySelector("iframe").remove();
+        setTimeout(function () { location.href = "/slow"; }, 20);
+      });
+    </script>
+  </body>
+</html>
diff --git a/spec/support/views/removed_iframe.erb b/spec/support/views/removed_iframe.erb
@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html>
+  <body>
+    <button onclick="addFrame('/really_slow', 300); addFrame('/show_cookies/set_cookie_slow')">Add iframes</button>
+
+    <script>
+      function addFrame(src, removeAfter) {
+        var frame = document.createElement("iframe");
+        frame.src = src;
+        document.body.appendChild(frame);
+        if (removeAfter) setTimeout(function () { frame.remove(); }, removeAfter);
+      }
+    </script>
+  </body>
+</html>
-Original file line number
+Diff line change
@@ Expand Up / @@ -104,6 +104,7 @@ def subscribe_frame_detached @@
                 frame.execution_id = nil
               else
                 @frames.delete(params["frameId"])
+                @event.set if @main_frame.idle? && frame&.idle? == false && frames.size == 1
               end
             end
           end
@@ Expand Down @@