dosubot[bot] commented on issue #43558:
URL: https://github.com/apache/superset/issues/43558#issuecomment-5428124486

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   @MallikarjunaReddyN this is a duplicate of #43383, which describes the same 
root cause and symptoms [[1]](https://github.com/apache/superset/issues/43383).
   
   The misalignment happens because `VirtualTable` renders the header as a 
plain Ant Design `<thead>` and the body as a `react-window` `VariableSizeGrid` 
[[2]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/packages/superset-ui-core/src/components/Table/VirtualTable.tsx#L184-L249).
 Both derive column widths from the same `tableWidth` measured via 
`useResizeDetector` 
[[3]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/packages/superset-ui-core/src/components/Table/VirtualTable.tsx#L84-L125).
 When the body Grid needs a vertical scrollbar, that scrollbar eats into the 
body's visible column width — but the header is never adjusted to match, so the 
two drift apart. Additionally, `sticky={false}` is explicitly set 
[[4]](https://github.com/apache/superset/blob/829e4d92d91ceae4b43b1ed3b063ffe45377799c/superset-frontend/packages/superset-ui-core/src/components/Table/VirtualTable.tsx#L260
 ), disabling Ant Design's own sticky-header alignment. This is a different 
code path from the `plugin-chart-table` sticky-header fixes in PRs #36190, 
#36891, and #42573, which all target `useSticky.tsx` and don't affect 
`VirtualTable.tsx` 
[[5]](https://github.com/apache/superset/issues/43383#issuecomment-5368092070).
   
   There is already an open PR that addresses this: [#43472 — fix(core): align 
Drill to detail table headers with scrollable 
body](https://github.com/apache/superset/pull/43472) 
[[6]](https://github.com/apache/superset/pull/43472). It subtracts the 
scrollbar width from the column sizing width when the current page's rows 
overflow the visible height, keeping header and body in sync. It also adds a 
`getScrollBarSize` utility and test coverage.
   
   
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