I see. In that case, my theory might be wrong. I thought this was an issue with Mediatek chips in particular, since it happens with my two Xiaomi Mediatek devices but not with my Xiaomi Pad 5, which has a Snapdragon 865.
What SoC does your Poco X3 use, Snapdragon or Mediatek? I'm having the same issues although it's on a Redmi Note 12 Pro Plus 5G and Redmi Pad, both using a Mediatek SoC.
I'm also using the same Mesh Wi-Fi system (Deco M4).
So, how do you change the language of the camera app in specific without having to root? Cause you're supposed to be able to do it in Android 13 yet in MIUI 14 there is no such option.