Black vertical line in Trello card print preview — rendering bug?

[Michał Rożnowiecki]

Hi,

Since a few months ago, when printing a Trello card using the “Share → Print” function, a black vertical line appears on the left side of the printout. This happens consistently across multiple browsers (Edge, Chrome) and also when saving to PDF or XPS.

The card content is correct — description, activity log, etc. — but the visual artifact makes the printout look unprofessional, especially when sharing with clients.

I’ve tested this on multiple machines and confirmed it started after a recent Edge update, but Chrome shows the same behavior.

Screenshot attached for reference.

Is this a known issue? Are there any workarounds or plans to fix it?

Thanks in advance!

[Michał Rożnowiecki · Accepted solution]

Screenshot showing the issue: