RFR: 8341286: TreeView: visual artifacts when setting new root with null value

[Andy Goryachev]

On Mon, 30 Jun 2025 21:49:22 GMT, Ziad El Midaoui <zelmidaoui at openjdk.org> wrote:

> Fix for phantom disclosure nodes appearing when root is null

modules/javafx.controls/src/main/java/javafx/scene/control/skin/TreeCellSkin.java line 363:

> 361:     private void updateDisclosureNode() {
> 362: //        JDK-8341281 : Root TreeItem with null value breaks TreeTableView
> 363: //        if (getSkinnable().isEmpty()) return;

I think you've got it!
I can't reproduce the issue with your fix - both the reproducer and the monkey tester work correctly.

You don't need to keep the commented out code, please remove it.

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PR Review Comment: https://git.openjdk.org/jfx/pull/1838#discussion_r2237563172