BiColor with 1 extruder on Core One + => Blocking issue at the 12th elements

[Gwenou]

Description of the bug

The BiColor printing with one extruder function corctly with 11 elements, but when add a 12th one an error appear on the printer : "Not Enought tools"

Project file & How to reproduce

Open the EtiquettesV2-KO.3mf.
Slice and send to printer.
You will have the error message "Not enought tools"

If you delete one instance of the DryBox69-...PETG or DryBox69-...PLA it will works.

Custum G-Code at tool changing:
; TOOLCHANGE_GCODE
{if previous_extruder != -1} ; avoid an annoying M600 after the initial prime.
M117 Next color is {next_extruder} ; shows message about next color
G4 S5 ; shows the message for 5 seconds
M600 ; triggers the actual color change
{endif}

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.9.6

Operating system

Windows 11

Printer model

Prusa Core One +