Last compilation and cannot use 5Ghz

A new compilation this day :

git pull .. script/feeds update install

after version is 4.14.115 and i cannot scan / find & associat AP in 5GHZ mode

tested with Xiaomi Mi Router 3G & YouHua WR1200JS and same problem

before i use old compiled firmware with 2 * Xiaomi & 2 * YouHua in WDS and not this problem

my last good version is : 4.14.87 reinstalled this day