Bug 1647689 [Linux] Apply test workaround for Bug 1600182 again, r=jhorak

Depends on D81311

Differential Revision: https://phabricator.services.mozilla.com/D81312

browser/components/urlbar/tests/browser/browser.ini

@@ -131,6 +131,7 @@ run-if = e10s
 [browser_remotetab.js]
 [browser_remove_match.js]
 [browser_removeUnsafeProtocolsFromURLBarPaste.js]
+fail-if = (os == 'linux' && os_version == '18.04')  # Bug 1600182
 [browser_restoreEmptyInput.js]
 [browser_resultSpan.js]
 [browser_retainedResultsOnFocus.js]