icon_color don‘t work anymore with ha 0.110

[ x] I'm running the latest version of CustomUI (Update guide) or using a specific release that is not marked as "Broken".
[x ] I tried to force-refresh (Ctrl+Shift+R / Ctrl+F5) the browser
[ x] (Optional, but recommended) I'm using Chrome or tried to reproduce the feature on Chrome.

Browser + Version:
Safari, Chrome

CustomUI version:

20190518

Home Assistant release (hass --version):
0.110.0b0
Problem-relevant configuration.yaml entries:

  icon_color: >
    if (state === 'on') return '#FF0000';
    if (state === 'off') return '#00FF00';
    return icon_color;

Problem-relevant Home Assistant log entries:

Any errors from browser Javascript console:

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