Preview display artifacts since v2.4.0 (OK in 2.3.1)

Bambu Lab Software Bambu Studio
1

Hello,

I’m experiencing a display issue in the Preview tab since version 2.4.0 of Bambu Studio on Windows 10.

:magnifying_glass_tilted_left: Description

The sliced preview becomes very difficult to read:

  • numerous stray lines

  • inconsistent overlap of toolpaths

  • overall “noisy” rendering

:white_check_mark: Important

  • Slicing appears correct

  • Prints come out perfectly

:repeat_button: Version comparison

  • v2.3.1 → OK (normal display) :

IMG_20260428_194348
IMG_20260428_1943481920×1440 689 KB

  • v2.4.0 and later → issue present :

IMG_20260428_193356
IMG_20260428_1933561920×1440 802 KB

:test_tube: Tests performed

  • Different models → same result

  • Slicing settings unchanged

  • The issue appears immediately after updating

:red_question_mark: Questions

  • Are other users experiencing this since 2.4.0?

  • Is there a setting or workaround?

  • Is this a known bug?

Thanks in advance for your help!

2

What is the reason to use that old Studio?
To make it easier to compare the exact slicing behaviour, attach the 3mf file.

3

Hello,

As mentioned in my issue description, I’m using an older version (2.3.1) because I don’t have a choice: all versions since 2.4 have this bug (I test each one as soon as it’s released!).

And as also stated, all files show the same display issue.

4

I found two open issues for this problem on GitHub, but no indication that anyone is trying to fix it.

The only suggested workaround is to disable “Enable advanced G-code viewer” in Preferences.

1 Like
5

I did search on GitHub, but without any success… I can only see that you were much better at it than I was!
Thanks for your help — I’ll give that a try!

I’ll also add a comment on GitHub with details about my hardware.

6

I remembered the pictures, but had trouble finding the issues. I looked up the 2.4 release date (Nov.'25) and then sorted ‘Preview’ issues by creation date to narrow down the search. It seems odd that there have not been more recent discussions of the problem.