1. What happened
If Unity crashes, auto-attached files are shown with backslash in path (like D:\FTP5.4b15\.....).
Manually attached files and auto-attachments for non-crash report contain slashes (like D:/FTP5.4b15/....).
2. How we can reproduce it using the example you attached

1. Initiate Unity crash.
2. Observe bug reporter's auto-attached files (observe D:\FTP5.4b15\.....).
3. Attach manual attachments (observe D:/FTP5.4b15/....).
4. Open Unity - Project - BugReporter.
5. Auto-attached project path looks like (observe D:/FTP5.4b15/....).
Actual result: Paths contain backslashes only in Auto-attachments for crash reports.
Expected result: Paths contain only backslashes (or only slashes).