Row DOM Performance: browsing the table with virtual cursor does not load new data

[Jinnie]

Voice Over has special virtual cursor mode, in which you can browse a table/grid with a combination of VO-special key and the arrow keys. Default Voice-over key combination is "control-option". A common alternative is the Caps Lock key.
When this mode is activated, keyboard events do not reach the JS layer anymore, and the datagrid programmatic cursor gets out of sync with the virtual cursor.
Virtual cursor does generates small scroll events and does load new data, but does not recognize that there are new rows in the grid, so it jumps to either 1st row, next column, or to the beginning of the grid.