371: clear header tables for floating body tables (#2660)

Co-authored-by: Brandon Thomas <echelon@gmail.com>

docs/gaps.md

@@ -36,7 +36,7 @@ Active footnote and endnote text stays readable while editing (#2545). This fixe
 |---|---|---|---|---|---|---|
 | 1 | **DOCX never tested on real-world files.** No corpus of files from Word, Google Docs, LibreOffice and Pages has been opened, rendered and round-tripped and compared with Word page by page | B | No corpus in the repo; `crates/docx/tests` are synthetic fixtures (including omitted/empty paragraph defaults and imported TOC range preservation); "DOCX fidelity corpus: not started" since 2026-10-06. Field reports fixed one by one: a cover page's theme-coloured shapes (#611), freeforms inside groups and text-box margins and Resize to fit (#743), cover-page positions relative to the page and freeforms drawn back to their start (#743), Word's text watermark in headers, read and written (#1290), VML freeform rule lines in headers, and `flowChartOr` drawn with its spokes (#1644); explicit DrawingML outline dashes preserved | Everyone: the files people receive are the files that break | 30–50 | [file-format-parity.md](file-format-parity.md) |
 | 3 | **Crashes and freezes in the field**: startup crash on Intel UHD Graphics (#170, open), a crash on macOS 12.7.6 Intel (#979, open) (lag on GPUs without a DirectX 12 driver fixed, #316; 32-bit Windows exited at launch because DirectX 12 graphics pipeline creation failed, now OpenGL), freezes (#59 Thai fonts and #31 font selector, both open; #77 closed), broken shape tool (#142, open); the Windows 11 no-write-without-admin (#218) and unmovable images (#82) reports are closed (pictures and shapes in Behind Text drag through the text over them, #1313); memory growth on every font change fixed (#848: the font list no longer loads each family it previews) | B | 197 open issues (2026-10-12), among them the crash and freeze reports #170, #979, #59 and #31 | Anyone hit loses work or trust; the never-crash standard covers panics, not hangs or GPU driver faults | 20–30 | [target-app-parity.md](target-app-parity.md) (Stability) |
-| 4 | **Pagination differs from Word**: Aptos has no metric-matched substitute; legacy compatibility options only partially covered; no page-by-page comparison harness | B | SECTIONPAGES now counts shared continuous-section pages in body and header/footer fields; legacy same-style cell spacing preserved for measured modes 11/12/14, with mode 15 and non-cell controls; Contextual spacing corrected in body/header probes and repeated table-cell runs; [layout-parity.md](layout-parity.md); [typing-parity.md](typing-parity.md) Known gaps; stray labels on page-break-only list paragraphs fixed multi-paragraph field-code blank lines fixed; Arial Unicode MS no longer selects monospace substitutes | Page counts and line breaks differ, which matters for forms, legal and academic work | 30–50 + owner (font) | [layout-parity.md](layout-parity.md) |
+| 4 | **Pagination differs from Word**: Aptos has no metric-matched substitute; legacy compatibility options only partially covered; no page-by-page comparison harness | B | SECTIONPAGES now counts shared continuous-section pages in body and header/footer fields; legacy same-style cell spacing preserved for measured modes 11/12/14, with mode 15 and non-cell controls; Contextual spacing corrected in body/header probes and repeated table-cell runs; [layout-parity.md](layout-parity.md); [typing-parity.md](typing-parity.md) Known gaps; non-overlapping body floating tables clear header tables; stray labels on page-break-only list paragraphs fixed multi-paragraph field-code blank lines fixed; Arial Unicode MS no longer selects monospace substitutes | Page counts and line breaks differ, which matters for forms, legal and academic work | 30–50 + owner (font) | [layout-parity.md](layout-parity.md) |
 | 2 | **Word's native ink is not drawn from its strokes**; OLE objects show only their picture | B | Every native ink form is preserved: drawing-level ink with its optional picture fallback, direct run-level content parts, and ink members of groups and drawing canvases (kept in their place among the members, drawn from their fallback picture). Drawing canvases are read and written (#344); group shapes (`wpg`) read and written (#267). Charts and SmartArt are drawn (#292) and, with OLE objects, written back with all their parts on save (#319) | Pen notes from Word show only as their picture and can't be edited; OLE objects can't be opened | 45–70 to render and edit charts and SmartArt (#13) | [file-format-parity.md](file-format-parity.md) |
 | 5 | **Content controls** landed (#381): `w:sdt` kept, shown and edited (Developer tab, Design Mode, Properties). Move tracking landed (#400): `w:moveFrom`/`w:moveTo` with their named ranges round-trip, a tracked cut and paste of a paragraph or sentence records a move, either end accepts/rejects both, green double strike/underline markup and "Moved from/to" balloons; Track Changes Options has the Moves rows (Moved from / Moved to mark and colour) and `w:doNotTrackMoves` (Track moves off: a cut and paste is a deletion and an insertion) round-trips; still missing: drag-and-drop moves (no text drag yet). Formatting revisions landed (#41): `w:rPrChange`/`w:pPrChange`/`w:tblPrChange`/`w:trPrChange`/`w:tcPrChange`/`w:sectPrChange`/`w:numberingChange` round-trip, are recorded while tracking, accepted/rejected and shown in balloons; still missing: tracked style-definition changes and table/section changes made in WordCraft. Opaque custom XML backing stores now survive saves; binding evaluation remains absent. Replace All now checks content-control locks before editing any match; a refused batch preserves the document and undo history. | B | List-label pitch corrected in synthetic metric controls; Issues #41, #400; source grep | Legal and editorial review workflows; templates with form controls | 5–8 | [file-format-parity.md](file-format-parity.md) |
 | 6 | **Print dialog depth**: desktop printer choice, copies, collation, duplex and grayscale submit through craft-print; File › Print retains preview, page ranges and odd/even (#641) and scales pages to another paper size (#2108); driver tray/options and pages per sheet remain; web prints through the browser (#209) | B | `ui.print` → `apps/wordcraft/src/print.rs`; issue #15 | Everyone who prints | 5–8 | [hardware-parity.md](hardware-parity.md) |
@@ -140,6 +140,7 @@ Footer page-table height and body wrapping are corrected. Other pagination gaps
 | 2026-10-17 | trivial | SECTIONPAGES includes shared continuous-section pages in body and header/footer fields |
 | 2026-10-17 | trivial | Footer page tables preserve text height and wrap intersecting body lines |
 | 2026-10-17 | minor | File › Print's Scale to paper size (#2108): pick Letter, Legal, A4 or any Layout › Size paper and every page is scaled to it and centred, the paper turned to each page's orientation, in the preview, the print job (with the spooler's media) and Save these pages as PDF; the document keeps its page size. `paper` param on `ui.print`/`file.printPdf` |
+| 2026-10-17 | trivial | Non-overlapping body floating tables clear header tables; overlapping tables keep their requested position |
 | 2026-10-14 | trivial | Row table border exceptions fixed; other row table exceptions remain unsupported |
 | 2026-10-12 | minor | Czech proofing review: short-word splits rank after deletion, NOSUGGEST excludes suggestions while accepting typed forms, affix comments apply only to headers, ratios keep spaces and repeated-word messages use Czech quotes; synthetic engine end-to-end and latency checks |
 | 2026-10-12 | minor | Czech spelling from the installed Hunspell dictionary, runtime-table suggestions and generic checks; Czech interface writes cs-CZ documents; no Czech hyphenation patterns bundled; estimates unchanged |

docs/layout-parity.md

@@ -95,6 +95,12 @@ An original embedded-font control matches native Word inline fallback to Times w
 a covered primary glyph. A tall present-glyph label retains a 19.628 pt pitch (Word mean 19.632 pt).
 The combined numbering-definition blocks are not used to infer their individual font choices.
 
+## Floating tables across header and body
+
+A body floating table with `tblOverlap=never` clears floating header tables.
+Allowed overlap retains its requested position. Original native controls confirm
+both cases. Earlier-body reflow around late tables remains separate.
+
 ## List-label line spacing
 
 Controlled original DOCX probes against Word for Mac 16.113.3 (26092714), macOS 26.6.2,
@@ -240,6 +246,7 @@ Page-relative footer tables keep their physical wrap bounds without adding to fo
 | 2026-10-16 | trivial | Math operators, delimiters and accents missing from the math font use a fallback font (#1273) |
 | 2026-10-17 | trivial | SECTIONPAGES includes shared continuous-section pages in body and header/footer fields |
 | 2026-10-17 | trivial | Footer page tables preserve text height and wrap intersecting body lines |
+| 2026-10-17 | trivial | Non-overlapping body floating tables clear header tables; overlapping tables keep their requested position |
 | 2026-10-14 | trivial | Row table border exceptions draw without leaking into other rows |
 | 2026-10-14 | trivial | Consistent cell widths override a stale table grid |
 | 2026-10-14 | trivial | Paragraphs inside complex-field instructions take no flow height; empty result paragraphs keep their line. |