Epsilon + Khi + KhiCAS, bootloader gets skipped

[Alerymin]

Describe the bug
When I have:
Slot 1: Epsilon
Slot 2: Khi

Apps: KhiCAS (fron Upsilon External)

The bootloader gets skipped and I can't start Khi

To Reproduce
Steps to reproduce the behavior:

1. Install Upsilon bootloader
2. Install Epsilon in slot A
3. Install Khi in slot 2 from https://xcas.univ-grenoble-alpes.fr/nw/nws.html
4. Install KhiCAS from Upsilon external (from flash slots mode)
5. Reset
6. Bootloader is skipped

Expected behavior
Bootloader displayed and allowing booting from Epsilon or Khi

Device (please complete the following information):

• n0110
• bootloader 1.0.7

[Yaya-Cout]

It seems to be related to the exam mode (I haven't tested yet).

[Alerymin]

It's important to note that there is something with KhiCAS, because with Epsilon + Khi only there is no problem