Xiaomi has officially acknowledged several problems reported by users of its popular Redmi smartphones.
What is known
First, in Redmi 10 camera "unlearned" to scan a QR-code. The problem is actual for models with software v126.96.36.199.RKUMIXM, v188.8.131.52.RKUMIXM and v184.108.40.206.0.RKUMIXM. The fix is already ready.
Secondly, in the same smartphone the ability to adjust volume level when Bluetooth headphones are connected is missing. The bug was noticed in the global version with MIUI 12.5 firmware number v220.127.116.11 RKUMIXM.
Thirdly, the Fortnite shooter has stopped working on the Redmi Note 8 Pro. The problem is present in firmware v18.104.22.168.RGGMIXM, v22.214.171.124.RGGEUXM and v126.96.36.199.RGGRUXM. No solution is available yet.
Fourth, the regular Redmi Note 8 automatically disables Wi-Fi. Note that this model is still running on MIUI 12 shell. An update with the fix has already been released.
Finally, fifthly, the Redmi 9 can't launch Mobile Legends. This is reported by users with firmware v188.8.131.52.RJCIDXM and v184.108.40.206.RJOIDXM. True, it's not Xiaomi's fault here. The problem can be solved by updating the game itself in the app store.