Bibliography text is mixed between two columns

Question

I have a document and I have bib file and citations in the text. The documents information is this:

\documentclass[smallextended]{svjour3}
\usepackage[sorting=none]{biblatex}
\begin{document}
 abstract in one column
\twocolumn
 the article and citations
 \printbibliography
 \end{document}

The problem is that in the bibliography section, the references in the two columns sometimes get mixed:

Other references are fine, but the only two are the problem. I need to add that the same problem exists through the article in several instances, where a math formula has reached end of the line and cannot be collapsed in the next line. I may be able to handle this by changing that line, but in the references I have no idea what to do.

Thanks.

edit:

The previous code for reference 1 was :

@article{morgulis2019fooling,
title={Fooling a real car with adversarial traffic signs},
author={Morgulis, Nir and Kreines, Alexander and Mendelowitz, Shachar 
and Weisglass, Yuval},
journal={arXiv preprint arXiv:1907.00374},
year={2019}
}

for reference 3, the issue was resolved only when I manually changed the 3 authors name to the et al. format. I had added this reference manually.

@inproceedings{
arjomandi2021limited,
title={Limited Budget Adversarial Attack Against Online Image Stream},
author={Mohasel Arjomandi, Hossein and Khalooi, Mohammad and 
Amirmazlaghani, Maryam},
booktitle={ICML 2021 Workshop on Adversarial Machine Learning},
year={2021},
url={https://openreview.net/forum?id=IjsmgcivXL}
}

reference 14 was fine and was not changed:

@article{goodfellow2014explaining,
title={Explaining and harnessing adversarial examples},
author={Goodfellow, Ian J and Shlens, Jonathon and Szegedy, Christian},
journal={arXiv preprint arXiv:1412.6572},
year={2014}
}

Answer 1

Using

\addbibresource{biblatex-examples.bib}

and

\nocite{*} 
\printbibliography

you get dozens of overflow boxes per page.

They disappear adding \raggedright

\nocite{*} 
\raggedright
\printbibliography

Using \defbibenvironment{bibliography} it is possible to make better use of the space.

    \DeclareFieldFormat{labelnumberwidth}{\makebox[0pt][l]{[#1]}}
    \defbibenvironment{bibliography}
    {\list{\printfield[labelnumberwidth]{labelnumber}}
        {%
            \setlength{\leftmargin}{1.8em}%
            \setlength{\labelsep}{2em}%
            \setlength{\itemindent}{-2em}%          
            \addtolength{\itemindent}{\labelsep}%   
            \setlength{\itemsep}{\bibitemsep}%
            \setlength{\parsep}{\bibparsep}}}
    {\endlist}
    {\item}

This is the complete code.

\documentclass[smallextended]{svjour3}

%%********************************** show two column margins
\usepackage{showframe}
\usepackage{etoolbox}
%% From https://tex.stackexchange.com/questions/271285/show-frame-margin-in-two-column-layout
\newlength\Fcolumnseprule
\setlength\Fcolumnseprule{0.4pt}

\makeatletter
\newcommand\ShowInterColumnFrame{
    \patchcmd{\@outputdblcol}
    {{\normalcolor\vrule \@width\columnseprule}}
    {\vrule \@width\Fcolumnseprule\hfil
        {\normalcolor\vrule \@width\columnseprule}
        \hfil\vrule \@width\Fcolumnseprule
    }
    {}
    {}
}

\makeatother
\ShowInterColumnFrame
%%********************************** 

\usepackage[sorting=none]{biblatex}

    \DeclareFieldFormat{labelnumberwidth}{\makebox[0pt][l]{[#1]}}
    \defbibenvironment{bibliography}
    {\list{\printfield[labelnumberwidth]{labelnumber}}
        {%
            \setlength{\leftmargin}{1.8em}%
            \setlength{\labelsep}{2em}%
            \setlength{\itemindent}{-2em}%          
            \addtolength{\itemindent}{\labelsep}%   
            \setlength{\itemsep}{\bibitemsep}%
            \setlength{\parsep}{\bibparsep}}}
    {\endlist}
    {\item}

\addbibresource{biblatex-examples.bib}

\begin{document}

    abstract in one column
    \twocolumn
    the article and citations
    
    \nocite{*}  
    \raggedright
    \printbibliography
\end{document