X axis offset on multiple model when changing color with AMS lite

[jmilhau]

Bambu Studio Version

1.9.7.50

Where is the application from?

Bambu Lab Official website

OS version

MacOS 15.0

Additional system information

Since today (since latest Studio update? v1.9.7.50) any print I make with several colors in the same layer gets a x-axis gap a several millimeters. Maintenance did not help.

Black was printed first, then purple then cyan then orange.

Printer

Bambu Lab A1 Combo

How to reproduce

Print a model with 2 colors on the same layer

Actual results

Offset of the first color on the print

Expected results

No offset

Project file & Debug log uploads

test v1.3mf.zip Cannot add configuration folder (more than 25MB)

Checklist of files to include

• [x] Log file
• [x] Project file

[jmilhau]

Re installing 1.9.5.51 solves the issue

[BastR]

Same issue on A1 with AMS lite on macOs, had to stop print.

[MCKanpolat]

I've just updated the latest version and same issue I have. Mac OS 15

Also reinstalling (clean install) the BambuStudio didn't solved the issue.

[BastR]

I did a few tests with Windows and printing went off without a problem.

Edit: A user on the official facebook group reports that he also has the same problem with Windows.

[ziehmon]

Are you using timelapse by any chance?

[BastR]

In my case no, no timelapse on the A1

[jmilhau]

No timelapse either

[ziehmon]

Alright, can you do another check just to make sure? Try to remove the timelapse_gcode in extruder settings. It's a wild guess but worth a try. The behavior was changed in the new release.

Printing the first layers will be probably enough.