This is due to a concurrency bug in CSS StyleManager class:
https://javafx-jira.kenai.com/browse/RT-40417
It is currently not thread-safe, but it needs to be given that controls
may be constructed on arbitrary threads.
I plan to start working on this bug later this week and will use your
exa
Update: Same result with this code:
public void addNewTab(DynamicTreeNodeModel nodeModel)
{
final Tab tab = new Tab();
final ProgressBar progressBar = new ProgressBar();
final Task loadDataTask = new Task()
{
@Override
public BorderPane
