drush rn adds a random character to the start of each line (for core)

[jenlampton]

On Backdrop core drush rn adds a random character to the start of each line. I'd like to add that this is not happening for any contrib project.

For example:

* 3 Backdrop 1.8.1.
* 6 Issue <a href="https://github.com/backdrop/backdrop-issues/issues/2930">#2930</a>: Respect language weight order.
* 6 Issue <a href="https://github.com/backdrop/backdrop-issues/issues/2904">#2904</a>: rawurlencode()/rawurldecode() the database name, user and password from the database URL.
* 1 Issue <a href="https://github.com/backdrop/backdrop-issues/issues/2914">#2914</a>: Add some error checking when parsing the database connection string.
* c Issue <a href="https://github.com/backdrop/backdrop-issues/issues/2857">#2857</a>: Messages set on the update page do not look like messages.
* 5 Issue <a href="https://github.com/backdrop/backdrop-issues/issues/991">#991</a>: Follow-up to fix task item wrapping.
* 3 Issue <a href="https://github.com/backdrop/backdrop-issues/issues/2877">#2877</a>: Add support for async and defer to backdrop_add_js().
* c Issue <a href="https://github.com/backdrop/backdrop-issues/issues/2880">#2880</a>: Only link to update pages if Installer module is available.
* f Issue <a href="https://github.com/backdrop/backdrop-issues/issues/2903">#2903</a>: Modifying example date to use fixed value.
* 0 Issue <a href="https://github.com/backdrop/backdrop-issues/issues/2884">#2884</a>: Link to add a redirect should not show on node form if new node.
* d Issue <a href="https://github.com/backdrop/backdrop-issues/issues/2883">#2883</a>: Fix syntax error in hook_entity_view_mode_update.
* c Issue <a href="https://github.com/backdrop/backdrop-issues/issues/2312">#2312</a>: Taxonomy term feed has layout mark appended.