I created a plugin Lovelace Card Preloader which allows cards and/or rows to be preloaded, to work around the changes introduced in 0.107. However, it appears that this doesn’t work in Home Assistant Cast, which I believe is due to how it reads the Lovelace config but I cannot find any way to debug this.
I tried following the instructions here to set up the Cast receiver locally, in case that would allow me to debug it but haven’t had any joy (it can’t see my Chromecasts which should have been set up to be in development mode).
Does anybody have any suggestions?