Tabulator Virtual DOM bug, rows disappear

[taylortig-proscia]

Describe the bug

The virtual DOM fails to render rows with the addition of new moved columns to the table. We have however, also had reports from customers of white space after sort and scroll, so there may be other ways to trigger a virtual DOM error, these steps are just easily reproduced. I am unable to capture this error and recover from it without a page reload.

Tabulator Info
I have replicated this on 5.4 and 6.3.

Working Example
https://jsfiddle.net/taylortignino/voq9kudm/47/

To Reproduce

1. Add a column
2. Scroll down
3. Move the column left
4. Add another column
5. Scroll down
6. Move that column left
7. Scroll around and observe the blank table and errors in console

Row.js:422 Uncaught TypeError: Cannot read properties of undefined (reading 'delete')
at p.deleteCells (Row.js:422:18)
at p.initialize (Row.js:73:9)
at b._virtualRenderFill (VirtualDomVertical.js:297:10)
at b.scrollRows (VirtualDomVertical.js:125:9)
at HTMLDivElement. (RowManager.js:145:19)

Expected behavior
The table rows will render appropriately and/or in these situations, there will be a way to recover without reloading the page.

Screenshots

Screencast.from.2024-12-17.05-47-52.mp4

Desktop (please complete the following information):

• OS: Linux
• Browser Chrome
• Version 131