Two of Our Three Preloaded Chunks Rotated: What Changed in the Asset Filenames on 11 November

On 11 November 2026, two out of three preloaded JavaScript files used by app.onepassapps.com underwent filename changes. A reporter examined all 56 URLs in the site's sitemap, fetching them via plain HTTPS and analyzing the link rel= modulepreload tags and script src tags in the served HTML. Of the 56 pages, 33 still contained three modulepreload links, while the remaining 23 remained unchanged as the guides index and its 22 associated pages, which do not load any bundles.

The filenames of the preloaded files had changed. Specifically, the runtime chunk remained the same, named rolldown-runtime-QTnfLwEv.js, and retained its size of 694 bytes raw and 403 bytes under brotli. However, the other three files - app-shell-shared-DCrZF6q_.js, react-vendor-DY6N_LXH.js, and index-LNYK_bk0.js - had different hash values in their filenames compared to November 8th.

Consequently, the old filenames now returned a 404 error. The sizes of these files also altered: the shared app shell grew from 369,609 bytes to 369,710 bytes raw and 116,569 bytes to 116,481 bytes under brotli. The React vendor chunk remained the same size of 178,924 bytes raw, while the entry module increased from 324,591 bytes raw to 325,707 bytes raw.

The compressed size of the three chunks together decreased from 875,035 bytes to 173,055 bytes for the brotli request. The entry module alone accounted for 325,707 bytes raw, with the total pulled by a single app page equating to 875,035 bytes. The guide-fleet pages remained unaffected, as they do not load any bundles and simply fetch the same two stylesheets, index-B0tmDgOR.css and shell-fallback.css.