Component-based grid columns currently default to hideMode: 'removeDom' (inherited from Neo.grid.column.Base).
This enables cell pooling, which uses index-based IDs (e.g., __cell-0).

However, this breaks SortZone's "surgical DOM move" logic during drag-and-drop:

1. ID Instability: Reordering columns changes the mapping of dataFields to indices.
2. Restoration Failure: SortZone restores content to the old ID (e.g., __cell-5), but the grid renders the column at a new ID (e.g., __cell-3).
3. State Loss: This causes the VDOM engine to "replace" rather than "move" components, destroying internal state (Canvas, etc.) or leaving cells empty ("pruned").

The Fix:
Update Neo.grid.column.Component to default to hideMode: 'visibility'.
This ensures:

1. Stable IDs: Cells use __dataField IDs, which persist across reorders.
2. Zero DOM Thrashing: Cells are toggled via visibility, avoiding insert/remove operations, aligning with the Grid's "Fixed-DOM-Order" strategy.
3. Drag Stability: SortZone can correctly restore content to the stable ID.

This will implicitly fix issues with GitHubOrgs, Heuristics, and other component columns.