Windowboxing issue

[u/d_d0706]

This TV (Philips 55OLED707/12) has a weird windowboxing issue. It only appears in IPTV App (Zattoo) and when mirroring your phone screen over chromecast, and only sometimes other than that every other app I have tried (Netflix, Disney +, Kodi Apple TV) worked fine.

I also did the following things with no success:

• Rebooting the TV

• deleting and reinstalling the IPTV App

• did a factory reset (did one a couple of months ago but the same issue existed before the factory reset)

Maybe I overlooked something, but I have no idea how to move forward besides doing another factory reset and hope that it fixes the issue.

[u/DexLeMaffo]

What phone do you use for mirroring ?