Severe UI freeze during drag‑and‑drop within a docked panel containing a TableView/ListView

[SandeepaInduwaraSamaranayake]

When dragging files from a TableView or ListView inside a SnapFX‑docked panel (the file explorer), the UI freezes completely until switch to or hover another window.

The issue disappears if:

• The source panel is floated (detached from the dock layout).
• The application loses and regains focus (which resets the event loop) (switch to or hover another window)

Steps to Reproduce:

1. Set up a SnapFX dock layout with a panel: DockSplitPane file listing (containing a TableView with many rows) and a folder tree (drop target).

2. Select single/multiple files in the TableView.

3. Start dragging the files and move the mouse over the folder tree (even drag causes the freeze).

4. UI freezes and the application becomes unresponsive until switch to or hover another window.

5. Float the file listing panel - the freeze no longer occurs.

Environment:

SnapFX version: 0.8.0
Java version: 26
JavaFX version: 25
OS: Windows 10

[SandeepaInduwaraSamaranayake]

Hi @Beowolve , just following up on this issue. Has there been any progress or investigation into the drag-and-drop freeze described here?

The issue is still reproducible with SnapFX 0.8.0 when dragging files from a TableView/ListView inside a docked panel. It would be great to know if you've identified the cause or have any potential fix/workaround in mind.

Thanks!