## Root Cause Animation gets started in a background thread, which causes the animation handler to run in the FX application thread, thus creating simultaneous access to the control's fields (list of children in this case).
## Solution Skip the animation. The fix is similar to https://github.com/openjdk/jfx/pull/1698 ------------- Commit messages: - skip animation Changes: https://git.openjdk.org/jfx/pull/1699/files Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1699&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8349098 Stats: 18 lines in 2 files changed: 2 ins; 5 del; 11 mod Patch: https://git.openjdk.org/jfx/pull/1699.diff Fetch: git fetch https://git.openjdk.org/jfx.git pull/1699/head:pull/1699 PR: https://git.openjdk.org/jfx/pull/1699
