diff --git a/tests/sanity/tests/model/tracker/issues-details-page.ts b/tests/sanity/tests/model/tracker/issues-details-page.ts
index 95b1345af3..d91e16e852 100644
--- a/tests/sanity/tests/model/tracker/issues-details-page.ts
+++ b/tests/sanity/tests/model/tracker/issues-details-page.ts
@@ -147,4 +147,17 @@ export class IssuesDetailsPage extends CommonTrackerPage {
   async checkCollaboratorsCount (count: string): Promise<void> {
     await expect(this.buttonCollaborators).toHaveText(count)
   }
+
+  async addToDescription (description: string): Promise<void> {
+    const existDescription = await this.inputDescription.textContent()
+    await this.inputDescription.fill(`${existDescription}\n${description}`)
+  }
+
+  async openShowMoreLink (activityHeader: string, position: number = 0): Promise<void> {
+    await this.textActivity.filter({ hasText: activityHeader }).locator('xpath=..').locator('div.showMore').click()
+  }
+
+  async checkComparingTextAdded (text: string): Promise<void> {
+    await expect(this.page.locator('span.text-editor-highlighted-node-add', { hasText: text }).first()).toBeVisible()
+  }
 }
diff --git a/tests/sanity/tests/tracker/issues.spec.ts b/tests/sanity/tests/tracker/issues.spec.ts
index 266d8c2db4..e069ec0fa8 100644
--- a/tests/sanity/tests/tracker/issues.spec.ts
+++ b/tests/sanity/tests/tracker/issues.spec.ts
@@ -317,4 +317,28 @@ test.describe('Tracker issue tests', () => {
     await issuesPage.searchIssueByName(deleteIssue.title)
     await issuesPage.checkIssueNotExist(deleteIssue.title)
   })
+
+  test('Check the changed description activity', async ({ page }) => {
+    const additionalDescription = 'New row for the additional description'
+    const changedDescriptionIssue: NewIssue = {
+      title: `Check the changed description activity-${generateId()}`,
+      description: 'Check the changed description activity description'
+    }
+
+    const leftSideMenuPage = new LeftSideMenuPage(page)
+    await leftSideMenuPage.buttonTracker.click()
+
+    const issuesPage = new IssuesPage(page)
+    await issuesPage.modelSelectorAll.click()
+    await issuesPage.createNewIssue(changedDescriptionIssue)
+    await issuesPage.searchIssueByName(changedDescriptionIssue.title)
+    await issuesPage.openIssueByName(changedDescriptionIssue.title)
+
+    const issuesDetailsPage = new IssuesDetailsPage(page)
+    await issuesDetailsPage.waitDetailsOpened(changedDescriptionIssue.title)
+    await issuesDetailsPage.checkIssue(changedDescriptionIssue)
+    await issuesDetailsPage.addToDescription(additionalDescription)
+    await issuesDetailsPage.openShowMoreLink('changed description')
+    await issuesDetailsPage.checkComparingTextAdded(additionalDescription)
+  })
 })