If EU team reverse back to stock setting on MIUI 10 8.7.12 ( for Max 2 ), I can mod qemu.hw.mainkeys=0 as I did on original MIUI 10 8.7.12 . Big screen need back gesture more than other devicesThere will be no fix. FSG were disabled for Nougat devices as of 8.7.12 v2, because they are officially not supported on anything lower than Oreo. If you insist on using the qemu.hw.mainkeys=0 mod, that's your responsibility now. FSG were never functioning properly on Nougat MIUI ROMs.