span rules shows white area when used with background color

[parivalavanm]

Please refer to the original tex.stackexchange question I had asked. This looks similar to the another question about rules not being rendered properly on acrobat #468

Adding the same here

\documentclass{article}
\usepackage[table]{xcolor}
\usepackage{tabularray}

\definecolor{jobcolor}{RGB} {0,   146, 207}

\begin{document}

\begin{tblr}{
    colspec={|c| c| c| c| c| c |c|},
    rowspec={Q[jobcolor] Q[jobcolor]},
}

\hline
% first header row
\SetCell[r=2]{c} 2 Rows
& \SetCell[c=2]{c} 2 Columns
&
& \SetCell[c=2]{c}\cellcolor{blue!25} next 2 Columns
& & \SetCell[r=2,c=2]{c} 2 Rows\linebreak 2 Columns \\
\SetHline[1]{2-3}{fg=red,wd=0.5pt, leftpos=-0.5, rightpos=-0.5, endpos}
\SetHline[1]{4-5}{fg=red,wd=0.5pt, leftpos=-0.5, rightpos=-0.5, endpos}

% second header row
& 2-2 & 2-3 & 2-4 & 2-5 & &  \\
\hline

% first data row
3-1 & 3-2 & 3-3 & 3-4 & 3-5 & 3-6 & 3-7 \\
\hline
\end{tblr}
\end{document}

The output looks like given below:

The span rule is created using \SetHline[1]{2-3}{fg=red,wd=0.5pt, leftpos=-0.5, rightpos=-0.5, endpos}. If you look closely, there is a white rule that appears where the trimming is happening with leftpos and rightpos. I am not sure from where the white color/rule is coming from.

Is this a challenge with the package or am i doing something wrong?

To make it clear, if i remove the colspec from the tblr block and remove the leftpos=-0.5, rightpos=-0.5, from the SetHline, then the output will look like the following:

The rule below the spanned cells extend through the entire cell. i need them to not include the area of the column separator. This makes it look as if the columns 2,3 and 4,5 are merged together

[lvjr]

At present you cannot set bg colors for border lines. As a workaround you can add bg colors with tikz library (added in v2005A):

\documentclass{article}
\usepackage{tabularray}
\UseTblrLibrary{tikz}
\definecolor{jobcolor}{RGB}{0,146,207}
\begin{document}

\begin{tblrtikzbelow}
  \draw[jobcolor,line width=1pt] (h2-|v2) -- (h2-|v6);
\end{tblrtikzbelow}%
\begin{tblr}{
    colspec={|c| c| c| c| c| c |c|},
    rowspec={Q[jobcolor] Q[jobcolor]},
}
\hline
% first header row
\SetCell[r=2]{c} 2 Rows
& \SetCell[c=2]{c} 2 Columns
&
& \SetCell[c=2]{c} next 2 Columns
& & \SetCell[r=2,c=2]{c} 2 Rows\linebreak 2 Columns \\
\SetHline[1]{2-3}{fg=red,wd=0.5pt, leftpos=-0.5, rightpos=-0.5, endpos}
\SetHline[1]{4-5}{fg=red,wd=0.5pt, leftpos=-0.5, rightpos=-0.5, endpos}
% second header row
& 2-2 & 2-3 & 2-4 & 2-5 & &  \\
\hline
% first data row
3-1 & 3-2 & 3-3 & 3-4 & 3-5 & 3-6 & 3-7 \\
\hline
\end{tblr}

\end{document}