This is a big problem, and I am finding it goes a bit deeper. I did see in the "known issues" that the team is aware of the Chimera skin however there is more. When I reached level 50 on tanks and unlocked the Gold Standard skin I began to notice I was getting 1 shotted while at 100% HP. So did some testing and sure enough, if you hit either of the 2 long orange stripes on the front of the plow it will insta-kill the tank. We also tested the Chimera skin and found that if you hit any of the 4 black oval sensors on the turret will result in a 1 shot. Stick with a camo pattern instead of a skin until this is resolved.
Here's the video of our test.
https://medal.tv/games/battlefield-6/clips/lF8soKp6E0skd6A37?invite=cr-MSxWa0YsNDgzNjUzMzA2&v=351