Issue with Excell Keymap + smartrendering and scrolling in G

Thanks now I can edit cells continuously but when I try to edit the last row of a block on smart rendering the key map not work. for example I have a grid whit 3,000 rows smart rendering just render 100 rows to block. So if i try edit my grid (slowly or continuously ) when smart rendering render a new blok, the excel navigation stop.

please help me my work depends of this.

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