diff --git a/__tests__/label/label.test.ts b/__tests__/label/label.test.ts
index 01e04395..32383b7d 100644
--- a/__tests__/label/label.test.ts
+++ b/__tests__/label/label.test.ts
@@ -89,6 +89,33 @@ describe('protected labels', () => {
     },
   )
 
+  it('names the first protected label when several are requested', async () => {
+    issueCommentEvent.comment.body = '/label hold lgtm'
+    const commentContext = new utils.MockContext(issueCommentEvent)
+
+    const observePost = new utils.ObserveRequest()
+    server.use(
+      http.post(
+        `${utils.api}/repos/Codertocat/Hello-World/issues/1/labels`,
+        utils.mockResponse(200, null, observePost),
+      ),
+      utils.repoHasLabels(['good-first-issue', 'help-wanted', 'documentation', 'tide/merge-method-squash']),
+      http.get(
+        `${utils.api}/repos/Codertocat/Hello-World/contents/.prowlabels.yaml`,
+        utils.mockResponse(200, withProtected),
+      ),
+      ...utils.noOrgOrRepoConfigExcept('.prowlabels.yaml'),
+    )
+
+    const setFailed = vi.spyOn(core, 'setFailed').mockImplementation(() => {})
+    await handleIssueComment(commentContext)
+    await expect(observePost.notCalled()).resolves.toBe('not called')
+    expect(setFailed).toHaveBeenCalledTimes(1)
+    expect(setFailed).toHaveBeenCalledWith(
+      expect.stringContaining('label: hold is managed by its own command and cannot be changed with /label'),
+    )
+  })
+
   it.each([
     ['/remove-label hold', 'hold'],
     ['/remove-label LGTM', 'lgtm'],
diff --git a/__tests__/label/lifecycle.test.ts b/__tests__/label/lifecycle.test.ts
index 40a69be7..685aa649 100644
--- a/__tests__/label/lifecycle.test.ts
+++ b/__tests__/label/lifecycle.test.ts
@@ -86,6 +86,18 @@ describe('built-in lifecycle, stage and status commands', () => {
     expect(setFailed).not.toHaveBeenCalled()
   })
 
+  it.each([
+    ['/stage', 'beta', 'stage/alpha', 'stage%2Falpha', 'stage/beta'],
+    ['/status', 'in-review', 'status/in-progress', 'status%2Fin-progress', 'status/in-review'],
+  ])('%s %s replaces the existing %s', async (command, value, current, encoded, label) => {
+    const mutations = serveIssueAndRecordMutations([current])
+
+    const setFailed = await run(command, `${command} ${value}`)
+
+    expect(mutations).toEqual([`DELETE ${encoded}`, `POST ${label}`])
+    expect(setFailed).not.toHaveBeenCalled()
+  })
+
   it('/remove-lifecycle stale removes lifecycle/stale', async () => {
     const mutations = serveIssueAndRecordMutations(['lifecycle/stale'])
 
@@ -95,6 +107,15 @@ describe('built-in lifecycle, stage and status commands', () => {
     expect(setFailed).not.toHaveBeenCalled()
   })
 
+  it('/remove-lifecycle with two values removes both when both are on the issue', async () => {
+    const mutations = serveIssueAndRecordMutations(['lifecycle/stale', 'lifecycle/frozen'])
+
+    const setFailed = await run('/lifecycle', '/remove-lifecycle stale frozen')
+
+    expect(mutations).toEqual(['DELETE lifecycle%2Fstale', 'DELETE lifecycle%2Ffrozen'])
+    expect(setFailed).not.toHaveBeenCalled()
+  })
+
   it('/lifecycle fails for a value outside the defaults', async () => {
     const mutations = serveIssueAndRecordMutations([])
 
@@ -209,5 +230,36 @@ describe('built-in lifecycle, stage and status commands', () => {
       expect(mutations).toEqual(['POST lifecycle/frozen'])
       expect(setFailed).not.toHaveBeenCalled()
     })
+
+    describe('with a mixed-case yaml value', () => {
+      const mixedCase = yamlFile('lifecycle:\n  - Frozen\n')
+
+      it('/lifecycle matches the comment case-insensitively and applies the yaml casing', async () => {
+        const mutations = serveIssueAndRecordMutations([], mixedCase)
+
+        const setFailed = await run('/lifecycle', '/lifecycle frozen')
+
+        expect(mutations).toEqual(['POST lifecycle/Frozen'])
+        expect(setFailed).not.toHaveBeenCalled()
+      })
+
+      it('/lifecycle keeps a lower-case label on the issue that names the same value', async () => {
+        const mutations = serveIssueAndRecordMutations(['lifecycle/frozen'], mixedCase)
+
+        const setFailed = await run('/lifecycle', '/lifecycle frozen')
+
+        expect(mutations).toEqual(['POST lifecycle/Frozen'])
+        expect(setFailed).not.toHaveBeenCalled()
+      })
+
+      it('/remove-lifecycle removes a lower-case label on the issue that names the same value', async () => {
+        const mutations = serveIssueAndRecordMutations(['lifecycle/frozen'], mixedCase)
+
+        const setFailed = await run('/lifecycle', '/remove-lifecycle frozen')
+
+        expect(mutations).toEqual(['DELETE lifecycle%2Ffrozen'])
+        expect(setFailed).not.toHaveBeenCalled()
+      })
+    })
   })
 })