When we select an option of a select menu it does not appear selected, we repeat the process of the selection and then it is selected OK. If We try to select other option it happens the same, first time bad, second time OK. It is happening since We have update to version 50 of Chrome, with previous version 49 and above version than 50 it worked Proper.
We are facing this issue in Nexus ( Android 5.1.1 & Chrome version 50 ) and Android One ( Android 6.0.1 & Chrome version 50 ).
This is still known issue for chrome 50 version as I have checked in previous version all select box in working properly.