Public bug or docs issue
Use GitHub issues with synthetic reproduction steps and no GST identifiers.
Open a supported GST Portal page in the same browser profile, then reopen Pack.
Sign in again directly on the GST Portal and restart the supported Pack flow.
Confirm the return is filed and visible for the chosen financial year and period.
Check Chrome's download shelf, the configured download folder, and site download permissions.
Allow downloads for the GST Portal when you intentionally request multiple files.
Open Pack options and use Clear local Pack data, or remove the extension.