Make Find by Xpath ensure element is visible in integration tests

test/helpers/selenium-helper.js

@@ -85,7 +85,11 @@ class SeleniumHelper {
     }
 
     findByXpath (xpath, timeoutMessage = `findByXpath timed out for path: ${xpath}`) {
-        return this.driver.wait(until.elementLocated(By.xpath(xpath)), DEFAULT_TIMEOUT_MILLISECONDS, timeoutMessage);
+        return this.driver.wait(until.elementLocated(By.xpath(xpath)), DEFAULT_TIMEOUT_MILLISECONDS, timeoutMessage)
+            .then(el => (
+                this.driver.wait(el.isDisplayed(), DEFAULT_TIMEOUT_MILLISECONDS, `${xpath} is not visible`)
+                    .then(() => el)
+            ));
     }
 
     findByText (text, scope) {