Fully Kiosk Browser no longer showing my background image after update

I upgraded a bunch of things yesterday including HA Core and now my wall tablet running Fully Kiosk Browser no longer shows my background image. The image is stored locally.

  # Home Assistant override
  background-image: "center / cover no-repeat fixed url('/hacsfiles/themes/ios-themes/dandilions.jpg')"
  lovelace-background: var(--background-image)
  ha-card-box-shadow: 0px 2px 4px 0px rgba(0,0,0,0.16)
  ha-card-border-radius: 12px
    light: {}
    dark: {}
  sonos-ha-card-background-color: none

Any ideas why this might be? Image displays fine in the companion app.

I’m having the same issue. Someone suggested using F12 in the browser and reloading the page (Chrome). If I do that and click the ‘network’ tab, it shows it failed to load the background image. That status says it’s not found. I have a feeling that an update messed something up.

BTW, I’m not using fully kiosk so I don’t think it’s limited to that.

Just FYI, I tried saving my background to imgur and linking to it in the theme yaml file and it works. I also tried linking to another folder in HA away from the themes folder but it didn’t work.