URGENT HELP : input filter automation is buged ?

well . no matter if HC is off then as soon as HC-Freq has a value then nuendo turns HC-On automation to the oposite setting and write an automation when i don’t even touch the controler or mouse clic the HC-On/Off.
i just foud it’s the same for proximity EX when i automate the High Cut at first nuendo also add the HC on/off but then when i playback the automation nuendo writes automation…

here is a little video about it.
i never had that behaviour before 8.2 or 8.1

you see on the video that after getting out of the loop nuendo writes automation OFF on the HC-on.
doing so (why) it also overwrite what is inside the loop as “loop mode” is activated for my automation

but it’s not about loop mode even without loop mode when i record automation on HC or LP filters nuendo writes automations itself
very very annoying !

i thought locking the input filter HC On automation track and letting it on would make the trick but even with auomation lock nuendo autowrite an event that turns parameter off.