Max 8.2 bug ?

here is the (suuuuper messy ! sorry...) patch I use all day long.

https://we.tl/t-8sz2lwyfcW

Click the green "r" at the right bottom corner of the floating window
then you have to click one of the two umenu that appear to see the dropdown menu bug.
Everything works as expected with 8.1.11
Even deleting/undo the umenus doesn't fix it.
I had to recreate the umenus with same inspector setting to make it works again

thank you !

edit : max support informations :

{
    "version" : "Version 8.2.0 (42e5454dc76) (x64 windows)",
    "platform" : "windows",
    "arch" : "x64",
    "osversion" : "Microsoft Windows 10 Professional (build 19042), 64-bit",
    "samplerate" : 44100,
    "iovs" : 128,
    "sigvs" : 64,
    "scheduler_in_audio_interrupt" : "off",
    "audio_drivername" : "ad_asio",
    "audio_driver_subname" : "ASIO Fireface USB",
    "license" : "permanent full",
    "machine_id" : "203045678bed86fa37fa7b1d3007ea66",
    "eventinterval" : 2,
    "schedinterval" : 1.0,
    "overdrive" : "on",
    "pollthrottle" : 40,
    "queuethrottle" : 100,
    "sysqelemthrottle" : 1000,
    "refreshrate" : 33.333332061767578,
    "schedslop" : 25.0,
    "eventprobing" : 1,
    "mixerparallel" : "off",
    "mixercrossfade" : 0,
    "mixerlatency" : 30.0,
    "mixerramptime" : 10.0,
    "videoengine" : "viddll",
    "glengine" : "gl2",
    "packages" :     {
        "BEAP" : "1.0.4",
        "gl3" : "0.2.9",
        "jit.mo" : "1.1.6",
        "Jitter Tools" : "1.0.0",
        "max-mxj" : "8.2.0",
        "maxforlive-elements" : "1.0.4",
        "Mira" : "1.2.1",
        "Node for Max" : "2.0.4",
        "VIDDLL" : "1.2.5",
        "Video & Graphics" : "7.2.0",
        "Vizzie" : "2.2.0"
    }

}