Can't add repos in flatpak alpine 3.16

Adding flatpak repository without using an HTTP proxy results in the following error:

alpine-lap:/$ flatpak remote-add --user --if-not-exists flathub http://flathub.org/repo/flathub.flatpakrepo
F: Invalid proxy URI ''
**
GLib-GIO:ERROR:../gio/gsocketclient.c:1982:g_socket_client_enumerator_callback: assertion failed: (data->error_info->best_error)
Bail out! GLib-GIO:ERROR:../gio/gsocketclient.c:1982:g_socket_client_enumerator_callback: assertion failed: (data->error_info->best_error)
Aborted

and here are my proxy vars

alpine-lap:/$ env | grep http
https_proxy=
http_proxy=

Confirmed with replication by IRC user Bubblz, who reported using a proxy worked. I tried downgrading latest in 3.16 repos to 3.15's latest flatpak package and the following dependencies that were previously uninstalled on my system, but it did not fix the issue:

• appstream-glib
• fuse
• ostree
• flatpak-libs
• discover-backend-flatpak
• ostree-grub

Not sure if that helps, but I did forget to record version numbers! All I know is that it worked OK in 3.15.