I tried everything, but I simply can't turn off menu grabbing. It it not problem for menus, but for subtitles. When subtitles appear on the screen, Hyperion turns off complete bottom and top horizontal LEDs.
// KODI CHECK CONFIG
"xbmcVideoChecker" :
{
"xbmcAddress" : "127.0.0.1",
"xbmcTcpPort" : 9090,
"grabVideo" : true,
"grabPictures" : true,
"grabAudio" : true,
"grabMenu" : false,
"grabPause" : true,
"grabScreensaver" : true,
"enable3DDetection" : true
},