menu_main_15505_<n>_icon not working

[remlap]

I have been trying to edit the Discover button to Store and change its icon to a bag since Discover and a compass icon annoys me.

I am using the latest build from https://github.com/pgaskin/NickelMenu/actions/runs/12460091665

experimental : menu_main_15505_4_icon : /mnt/onboard/.adds/nm/.store.png

But the icon will not change, I can rename it fine.

Is this a known problem?