Files with special characters cannot be attached to issues

Summary

When trying to attach a file with a special character (for example: "|"), Jira will display de following error:

We couldn't save your attachment
Reload the issue then try adding it again

Environment

Jira Cloud.

Steps to Reproduce

1. Create a file and add a | on the filename
2. Try to add the file to an issue

Expected Results

The file should be added

Actual Results

Jira displays an error message

Workaround

Remove the | from the filename and try attach it again.