Core downloader not working - windows 10, RA v1.9.0

Hi all

Continuing the discussion from Retroarch 1.17.0 Linux flatpak core downloader not working, I’ve been having this issue for the last week or so; anyone else? It says ‘fetching list’ as normal but then proceeds to display only a list of the cores I already have installed, marked with a #, as per attached screenshot.

Haven’t knowingly changed anything recently so wondering if it could just be my older v1.9.0 causing probs, unless maybe something’s up with the buildbot (although I did manage to pull Gambatte core down manually from there the other day, so doubt it) ? I confirm:

As always, any help appreciated.