Text selection adds extra spaces in Sumatra PDF

Question

The following document:

\documentclass{standalone}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{lmodern}

\begin{document}
Hello world
\end{document}

result in the following weird selection behavior in Sumatra PDF v3.2:

(the d is selected, but the bounding box is wrong)

Which when copied gives the text He l l o w or l d.

If I remove \usepackage{lmodern} and \usepackage[T1]{fontenc}, everything seems to work fine.

What's going on here?