diff --git a/QA.md b/QA.md
index 0ecf292..0473126 100644
--- a/QA.md
+++ b/QA.md
@@ -27,7 +27,6 @@ The behaviors of the console are tested in [Console section](#consoles).
 
 #### Misc
 
-- [ ] <kbd>g</kbd><kbd>f</kbd>: open page source in the new tab.
 - [ ] <kbd>y</kbd>: yank current URL and show a message
 - [ ] <kbd>p</kbd>: open clipboard's URL in current tab
 - [ ] <kbd>P</kbd>: open clipboard's URL in new tab
@@ -118,6 +117,7 @@ The behaviors of the console are tested in [Console section](#consoles).
 #### Misc
 
 - [ ] Select next item by <kbd>Tab</kbd> and previous item by <kbd>Shift</kbd>+<kbd>Tab</kbd>
+- [ ] Reopen tab on *only current window* by <kbd>u</kbd>
 
 ### Settings
 
diff --git a/e2e/contents/navigate.test.js b/e2e/contents/navigate.test.js
index d36b167..32ed423 100644
--- a/e2e/contents/navigate.test.js
+++ b/e2e/contents/navigate.test.js
@@ -20,7 +20,7 @@ describe("navigate test", () => {
     let tab = await tabs.create(targetWindow.id, CLIENT_URL + '/a/b/c');
     await keys.press(tab.id, 'g');
     await keys.press(tab.id, 'u');
-    await new Promise(resolve => { setTimeout(() => resolve(), 10) });
+    await new Promise((resolve) => setTimeout(resolve, 10));
 
     tab = await tabs.get(tab.id);
     expect(tab.url).to.be.equal(CLIENT_URL + '/a/b/');
@@ -38,7 +38,7 @@ describe("navigate test", () => {
     let tab = await tabs.create(targetWindow.id, CLIENT_URL + '/a/b/c');
     await keys.press(tab.id, 'g');
     await keys.press(tab.id, 'U', { shiftKey: true });
-    await new Promise(resolve => { setTimeout(() => resolve(), 10) });
+    await new Promise((resolve) => setTimeout(resolve, 10));
 
     tab = await tabs.get(tab.id);
     expect(tab.url).to.be.equal(CLIENT_URL + '/');
@@ -49,11 +49,11 @@ describe("navigate test", () => {
     await keys.press(tab.id, 'g');
     await keys.press(tab.id, 'u');
     await keys.press(tab.id, 'H', { shiftKey: true });
-    await new Promise(resolve => { setTimeout(() => resolve(), 10) });
+    await new Promise((resolve) => setTimeout(resolve, 10));
 
     tab = await tabs.get(tab.id);
     expect(tab.url, 'go back in history').to.be.equal(CLIENT_URL + '/#navigate');
-    await new Promise(resolve => { setTimeout(() => resolve(), 10) });
+    await new Promise((resolve) => setTimeout(resolve, 10));
     await keys.press(tab.id, 'L', { shiftKey: true });
 
     tab = await tabs.get(tab.id);
@@ -64,7 +64,7 @@ describe("navigate test", () => {
     let tab = await tabs.create(targetWindow.id, CLIENT_URL + '/a-pagenation?page=10');
     await keys.press(tab.id, '[');
     await keys.press(tab.id, '[');
-    await new Promise(resolve => { setTimeout(() => resolve(), 10) });
+    await new Promise((resolve) => setTimeout(resolve, 10));
 
     tab = await tabs.get(tab.id);
     expect(tab.url).to.be.equal(CLIENT_URL + '/a-pagenation?page=9');
@@ -74,7 +74,7 @@ describe("navigate test", () => {
     let tab = await tabs.create(targetWindow.id, CLIENT_URL + '/a-pagenation?page=10');
     await keys.press(tab.id, ']');
     await keys.press(tab.id, ']');
-    await new Promise(resolve => { setTimeout(() => resolve(), 10) });
+    await new Promise((resolve) => setTimeout(resolve, 100));
 
     tab = await tabs.get(tab.id);
     expect(tab.url).to.be.equal(CLIENT_URL + '/a-pagenation?page=11');
@@ -84,7 +84,7 @@ describe("navigate test", () => {
     let tab = await tabs.create(targetWindow.id, CLIENT_URL + '/link-pagenation?page=10');
     await keys.press(tab.id, '[');
     await keys.press(tab.id, '[');
-    await new Promise(resolve => { setTimeout(() => resolve(), 10) });
+    await new Promise((resolve) => setTimeout(resolve, 10));
 
     tab = await tabs.get(tab.id);
     expect(tab.url).to.be.equal(CLIENT_URL + '/link-pagenation?page=9');
@@ -94,7 +94,7 @@ describe("navigate test", () => {
     let tab = await tabs.create(targetWindow.id, CLIENT_URL + '/link-pagenation?page=10');
     await keys.press(tab.id, ']');
     await keys.press(tab.id, ']');
-    await new Promise(resolve => { setTimeout(() => resolve(), 10) });
+    await new Promise((resolve) => setTimeout(resolve, 10));
 
     tab = await tabs.get(tab.id);
     expect(tab.url).to.be.equal(CLIENT_URL + '/link-pagenation?page=11');
diff --git a/e2e/contents/tab.test.js b/e2e/contents/tab.test.js
index 2d7f548..ada3760 100644
--- a/e2e/contents/tab.test.js
+++ b/e2e/contents/tab.test.js
@@ -139,7 +139,7 @@ describe("tab test", () => {
     expect(win.tabs).to.have.lengthOf(1);
 
     await keys.press(win.tabs[0].id, 'u');
-    await new Promise((resolve) => setTimeout(resolve, 100));
+    await new Promise(resolve => setTimeout(resolve, 100));
 
     win = await windows.get(targetWindow.id);
     expect(win.tabs).to.have.lengthOf(2);
@@ -163,4 +163,16 @@ describe("tab test", () => {
     let win = await windows.get(targetWindow.id);
     expect(win.tabs).to.have.lengthOf(1);
   });
+
+  it('opens view-source by gf', async () => {
+    let win = await windows.get(targetWindow.id);
+    let tab = win.tabs[0];
+    await keys.press(tab.id, 'g');
+    await keys.press(tab.id, 'f');
+    await new Promise(resolve => setTimeout(resolve, 500));
+
+    win = await windows.get(targetWindow.id);
+    let urls = win.tabs.map((t) => t.url)
+    expect(urls).to.include.members([CLIENT_URL + '/', 'view-source:' + CLIENT_URL + '/']);
+  });
 });
diff --git a/src/background/shared/tabs.js b/src/background/shared/tabs.js
index 33a4fac..26e2e44 100644
--- a/src/background/shared/tabs.js
+++ b/src/background/shared/tabs.js
@@ -22,7 +22,7 @@ const queryByKeyword = async(keyword, excludePinned = false) => {
 };
 
 const closeTabByKeywords = async(keyword) => {
-  let tabs = await queryByKeyword(keyword, false);
+  let tabs = await queryByKeyword(keyword, true);
   if (tabs.length === 0) {
     throw new Error('No matching buffer for ' + keyword);
   } else if (tabs.length > 1) {
@@ -32,7 +32,7 @@ const closeTabByKeywords = async(keyword) => {
 };
 
 const closeTabByKeywordsForce = async(keyword) => {
-  let tabs = await queryByKeyword(keyword, true);
+  let tabs = await queryByKeyword(keyword, false);
   if (tabs.length === 0) {
     throw new Error('No matching buffer for ' + keyword);
   } else if (tabs.length > 1) {