I just switched to Endeavour from Manjaro when I upgraded my hardware, and every update changes the default kernel on the selection screen. I go in and edit the file to change the default from lts to the latest kernel, and the next update switches it right back. It's maddening, i could do Arch, and I've done it on other machines I just don't have the time for that level of customization. I already waste enough time tinkering.