Why does windows remove linux boot entry?

Question

linux

There is a double boot (dual boot), but after each session in Windows, after rebooting, Windows is loaded immediately, and not the hornbeam window. The entry with manjaro disappears from the boot menu. You have to poke a flash drive and restore the bootloader. And sometimes it just raises its bootloader to the top and does not allow you to select an OS. How to fix it?

Answer 1

And this is not a fast boot so hooligan, by any chance?

Answer 2

Apparently Windows does not turn off, but goes into hypernation. It does not touch mbr itself.

Answer 3

What was the order in which the OS was installed?