[Bug]: iOS Files preview: PDF renders under the status bar and the header covers the top of the page #21415

Before submitting

• I searched existing issues and did not find a duplicate.
• I included enough detail to reproduce or investigate the problem.

Area

apps/mobile

Steps to reproduce

1. Open the iOS app and open a thread in a project that contains a PDF.
2. Tap Files.
3. Tap a PDF file to preview it (no download). Reproduced with the IRS Form W-9 (fw9.pdf, 6 pages) and the ResNet paper (resnet.pdf, 12 pages).

Expected behavior

The PDF preview starts below the status bar and the app header, so the top of the first page is fully visible.

Actual behavior

The preview is laid out from the very top of the screen instead of below the safe area and header:

• The page counter pill ("1 of 6") sits on top of the iOS status bar and overlaps the clock.
• The header (back button, "fw9.pdf", "reflow · samples", "…" menu) floats over the PDF with a blur, and the top of page 1 is underneath it. With fw9.pdf the whole "Form W-9 / Request for Taxpayer Identification Number" title block and lines 1–2 are hidden; the first visible content is line 3a.
• Same with a second PDF, resnet.pdf (12 pages): "1 of 12" overlaps the clock, and the paper title "Deep Residual Learning for Image Recognition" sits under the header; the first readable line is the author list.

Impact

Minor bug or occasional failure

Version or commit

2.0.0 (120)

Environment

iPhone, iOS 27.0.1 (24A446)

Logs or stack traces

No response

Screenshots, recordings, or supporting files

Workaround

No response

Related

Same kind of overlap as #15652 (header over thread content on iOS, fixed for the thread view) and #20908 (usage-limits panel under the header).