Code:

   const r = await fetch('big-file', {
     cache: 'no-store'
   });

Expected behaviour:

Since this bypasses the cache, backpressure should be applied.

Actual behaviour:

Backpressure is not applied.

Related to issue 535793 which is a broader attempt to enable backpressure.

See https://github.com/whatwg/fetch/issues/689.