## Root Cause The ContextMenu (PopupWindow) cannot be shown in a background thread.
## Solution Bail out of `show()` if in a background thread. ------------- Commit messages: - split / menu button fix Changes: https://git.openjdk.org/jfx/pull/1709/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1709&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8349096 Stats: 13 lines in 2 files changed: 4 ins; 5 del; 4 mod Patch: https://git.openjdk.org/jfx/pull/1709.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1709/head:pull/1709 PR: https://git.openjdk.org/jfx/pull/1709
