navigator.mimeTypes is empty

br.mimetypes_empty  ·  corroborates

What it catches

Sannysoft: headless reports zero mimeTypes. DESKTOP-only: a real desktop browser ships a standardized 2 mimeTypes, but every real MOBILE browser reports 0, so the collector gates mimetypes_empty emission to non-mobile UAs (calibration FP 4.4%->1.1%). Corroborating-only.

Signals it reads

browser.mimetypes_empty

How it fires

present

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