This test should have failed with the [changeset](https://github.com/openjdk/jdk/pull/20612) proposed for [JDK-4795384](https://bugs.openjdk.org/browse/JDK-4795384) but it didn't because GTK look and feel isn't supported in headless environment.
Fix is to run the test with headful environment on linux platform. Tested in CI pipeline and link attached to JBS. ------------- Commit messages: - added headful tag for linux platform Changes: https://git.openjdk.org/jdk/pull/20671/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20671&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8338668 Stats: 14 lines in 1 file changed: 12 ins; 1 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/20671.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/20671/head:pull/20671 PR: https://git.openjdk.org/jdk/pull/20671
