Mi Max 1 3G signal status bar

Bug description:there is no 3G or H+ symbol in statusbar. EDGE and LTE(4g) network is shown correctly.
Affected version:MK71.2-hydrogen-201711040829-NIGHTLY.zip
Steps to replicate:if i select LTE/WCDMA/2G, I get LTE symbol, when there is no LTE, i dont get 3G. When there is no 3g, i get Edge symbol without any problems.