Symptoms

When exporting a page to PDF, the export breaks single words apart and wrapping parts of the word to the next line.

Test page to replicate the behavior:

After exporting the page:

Resolution

Enter this CSS in Confluence Admin > PDF Stylesheet, and the problem is solved.

body, p, li, td, table, tr, .bodytext, .stepfield {
 word-wrap: normal;
}
.wiki-content p {
 word-wrap: normal;
}