How to reproduce:
1. Open the attached project "User Reporting.zip"
2. Open Assets/Samples/User Reporting/2.0.6/User Reporting Example/UserReportingExample.unity
3. Enter Play Mode
4. Click the "Create Report" button in the Game view window
5. Type "a" in the "Summary" and "Description" fields
6. Click the "Submit" button
7. Repeat steps 4-6
8. Open the "User Reporting" dashboard
9. Open both user reports

Expected results: Both user reports contain "SampleAttachment.json"
Actual results: Only the second user report contains "SampleAttachment.json"

Reproducible with: 2.0.4, 2.0.6 (2022.3.15f1, 2023.2.4f1, 2023.3.0a19)
Could not test with: 2021.3.33f1 (no User Reporting package)

Reproducible on: Windows 11 22H2
Not reproducible on: No other environment tested