Bug: Luban 4.15.0 ignores machine.def.json Start/End G‑Code – hardcoded G‑Code in JS bundle overrides profiles

[MichaelKoptschalitsch-EH]

🐞 bug report

Affected Version(s)

The issue is caused in version 4.15.0

To Reproduce

1. Luban is stopped
2. Change content of file: C:\Program Files\Snapmaker Luban\resources\app\src\app\app.a32eb564a8ba9b7552fd.bundle.js
   from s.push("G0 X-10 Y-10 F3000") to s.push("G0 X35 Y35 F3000") <=========
3. Start Luban
4. New project
5. Slice project and export it
6. Generated GCode looks like the folowing (just a snipet)

;Snapmaker Luban 4.15.0
;Mon Feb 23 2026 10:5:24
T0
M82 ;absolute extrusion mode
;Start GCode begin
G28 ;home
M104 S200
M140 S65
M109 S200 ;Wait for Hotend Temperature
M190 S65 ;Wait for Bed Temperature
G90 ;absolute positioning
G0 X35 Y35 F3000 <=========
G0 Z0 F1800

=> The START and END GCODE does not come from profile settings !!!
=> The START and END GCODE is HARD CODED in the bundle file!
=> Profiles are inkonsistent
=> Dokumentation is wrong
=> Behaviour of Slicer is not as it should

Expected behavior
Profiles should be used in the Sclicer, not the hardcoded bundle file (which is officially not documented)

🌍 My Environment

• Operating System: Windows 11 Pro
• Printer: Original, Snapmaker 2.0 / A350 (actual Firmware version)
• Snapmaker Luban 4.15.0

[MichaelKoptschalitsch-EH]

By the way. if I delete the file: app.a32eb564a8ba9b7552fd.bundle.js Luban will not start and throws exception:
[Window Title]
Error

[Main Instruction]
A JavaScript error occurred in the main process

[Content]
Uncaught Exception:
Error: ENOENT: no such file or directory, open 'C:\Program Files\Snapmaker Luban\resources\app\src\app\app.a32eb564a8ba9b7552fd.bundle.js'

[OK]