[Some walls are at full speed during initial layer. Is this a bug?]

I have the same Problem on linux. Here some of my system information for the developers:

 

wus@workshop3:~ $ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 11 (bullseye)
Release:        11
Codename:       bullseye
wus@workshop3:~ $ uname -a
Linux workshop3 5.10.0-26-amd64 #1 SMP Debian 5.10.197-1 (2023-09-29) x86_64 GNU/Linux
wus@workshop3:~ $ /lib/x86_64-linux-gnu/libc.so.6 --version
GNU C Library (Debian GLIBC 2.31-13+deb11u7) stable release version 2.31.
Copyright (C) 2020 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Compiled by GNU CC version 10.2.1 20210110.
libc ABIs: UNIQUE IFUNC ABSOLUTE
For bug reporting instructions, please see:
<http://www.debian.org/Bugs/>.
wus@workshop3:~ $ ls -la /opt/UltiMaker-Cura-5.5.0-linux-X64.AppImage 
-rwxr-xr-x 1 wus wus 303776960 Nov 13 04:50 /opt/UltiMaker-Cura-5.5.0-linux-X64.AppImage

 

Plugins installed:

 

How to reproduce the problem:

 

1. Use standard "Generic PLA"
2. Use Standard "Creality Ender 5" Printer
3. use Standard 0.2 profile with only temp and speed changes (see screenshot)
4. Use this test STL File: https://www.klipper3d.org/prints/ringing_tower.stl
5. Slice

 

The inner wall speed on layer 1 is 145 mm/s, it should be 20mm/s as the rest of the initial layer (See screenshot), this is the result: CE5_ringing_tower.gcode

 

 

Downgrading to Cura 4.4.0 solves the problem. Seems to have been introduced in the latest release.

 

Thanks for having a look at it and kind regards

-S