Bug: duplication mode is not working when printing via USB

[icu-hobby]

🐞 bug report

Affected Version(s)

Any except the FW 2.3.5

Is this a regression? (optional)

Yes, it is. The FW 2.3.5 which was available at support.snapmaker.com works as expected.

To Reproduce

Steps to reproduce the behavior:

1. Prepare G-code for printing for duplication mode
2. Check the correct usage of M605 S2 command in the initial script of G-code
3. Send the G-code to the printer via USB
4. Just left extruder is printing.

Exception or Error (optional)
No error message is send

Expected behavior
Correct implementation of M605 command and possibility to use duplication mode via USB port.

[icu-hobby]

Bug update:
The bug is caused by commit c6c56a2: Pref: right extruder do not wait temper in the middle of bed when work in copy mode. Since this commit, copy mode is not working via USB.

[icu-hobby]

Bug update:
Actual FW need specification of X distance between dual X carriages in initial g-code and cannot use the predefined value. The fastest patch is to send M605 S2 X162 R0 command during startup script.