srcset double-fetch repro — controlled, served over real HTTP

Both images have an identical matching <link rel=preload imagesrcset>. The only difference between them is whether the <img> tag itself also carries a plain src attribute. Must be loaded over http(s)://, not file://.

Case A — <img> HAS a plain src (id 7631570239)

Close-up of vibrant orange and teal geometric boucle upholstery fabric showing thick textured weave and nubby surface.

Case B — <img> has NO src, only srcset (id 7583622752)

May include: Close-up of a folded fabric with a repeating geometric pattern. The fabric features a textured orange background with a teal grid design. The fabric is draped, showing the texture and color variations.

Measured requests (Resource Timing API)

devicePixelRatio: — loaded via:

CaseFile requestedstartTime (ms)initiatorType