Redmine has the ability to automatically close issues when commit messages are properly formatted, as specified by Redmine's documentation.
We use this feature a lot, but we've come to the following corner case:
Of course, we can still close issues "by hand", but does anyone have a workaround or a specific workflow to automate this case too?
You can enable cross project referencing of issues in Administration -> Settings -> Repositories.
The option is labeled "Allow issues of all the other projects to be referenced and fixed"