odd line break within reference in PDF

[alicerusso]

Describe the issue

undesired line break right before the ">" on the URL of this reference.

input: https://www.rfc-editor.org/v3test/test9707.xml output: https://www.rfc-editor.org/v3test/test9707.pdf screenshot of PDF:

(there was a workaround; removing the trailing slash on the URL caused the line break placement to change.)

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