Describe the issue

See the attached XML file, which contains some text-based <artwork> objects.

test.xml.txt

textual artwork like this:

└┬╴Root of the tree
 ├─╴Child A
 └─╴Child B

Should show the vertical stem aligned, like so:

with the C of the child rows under the first o of the root row.

In practice, in a PDF, it tends to be misaligned, like this:

Interestingly, if there is a leading non-space character on each line, it seems to be correctly aligned:

This is an impediment to the effective processing of draft-ietf-lamps-e2e-mail-guidance, which is in AUTH48 right now.

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