Before the fix the test was failing around 1 time in fifty runs. After the fix the test did not fail in ~ 1k runs. Additional instrumentation is added to save useful information on the UI state, should the failure happen again.
------------- Commit messages: - A public method to capture the whole screen. - 1. Wait for ScrollPaneDemo container to be loaded. Changes: https://git.openjdk.java.net/jdk/pull/8848/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8848&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8225013 Stats: 52 lines in 3 files changed: 45 ins; 1 del; 6 mod Patch: https://git.openjdk.java.net/jdk/pull/8848.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/8848/head:pull/8848 PR: https://git.openjdk.java.net/jdk/pull/8848
