diff --git a/cypress_test/integration_tests/common/helper.js b/cypress_test/integration_tests/common/helper.js
index c26342dc5..2567e553e 100644
--- a/cypress_test/integration_tests/common/helper.js
+++ b/cypress_test/integration_tests/common/helper.js
@@ -358,6 +358,22 @@ function selectAllText(assertFocus = true) {
 		.should('exist');
 }
 
+function reselectAllText() {
+
+	cy.log('Unselect all texts');
+
+	typeIntoDocument('{downarrow}');
+
+	cy.get('.leaflet-marker-icon')
+		.should('not.exist');
+
+	typeIntoDocument('{ctrl}a');
+
+	cy.get('.leaflet-marker-icon')
+	   .should('exist');
+	cy.log('Reselect all texts');
+}
+
 // Clear all text by selecting all and deleting.
 function clearAllText() {
 	assertCursorAndFocus();
@@ -872,6 +888,7 @@ module.exports.assertCursorAndFocus = assertCursorAndFocus;
 module.exports.assertNoKeyboardInput = assertNoKeyboardInput;
 module.exports.assertHaveKeyboardInput = assertHaveKeyboardInput;
 module.exports.selectAllText = selectAllText;
+module.exports.reselectAllText = reselectAllText;
 module.exports.clearAllText = clearAllText;
 module.exports.expectTextForClipboard = expectTextForClipboard;
 module.exports.matchClipboardText = matchClipboardText;
diff --git a/cypress_test/integration_tests/desktop/writer/top_toolbar_spec.js b/cypress_test/integration_tests/desktop/writer/top_toolbar_spec.js
index 0eb9beea9..4c4ee903b 100644
--- a/cypress_test/integration_tests/desktop/writer/top_toolbar_spec.js
+++ b/cypress_test/integration_tests/desktop/writer/top_toolbar_spec.js
@@ -35,6 +35,15 @@ describe('Top toolbar tests.', function() {
 		    .should('exist');
 	});
 		
+	it('Apply underline.', function() {
+		cy.get('#tb_editbar_item_underline')
+			.click();
+		helper.reselectAllText();
+
+		cy.get('#copy-paste-container p u')
+			.should('exist');
+	});
+
 	it('Apply left alignment.', function() {
 		cy.get('#tb_editbar_item_centerpara')
 			.click();