After install ROM "Xiaomi.eu_multi_mi5c_v8.5.4.0" from version "Xiaomi.eu_multi_mi5c_v8.5.3.0" in 2 different phones, always launcher is KO. All in black. Other user from HTCmania forum have the same problem.
I install original CHINA ROM "meri_images_V8.5.4.0.NCJCNED_20170724.0000.00_7.1_cn_6f66f05d1d" and is OK, so I think is a bug of ROM EU.