Filing this task to report a bad behavior on gerrits part.
I had to recently revert a patchset, and the revert behavior caused a commit message line character limit error:
Original (no issues) patchset https://gerrit.wikimedia.org/r/#/c/377170/
Patchset to revert the above, introduced line wrap issues: https://gerrit.wikimedia.org/r/#/c/377297/
When the commit message window is filled out, it doesn't then line break the commit message as our CI checks require, and thus fails. The editor should be patched to line wrap commit messages properly.