This issue has been closed as 'Won't Fix' due to an extended period of time without updates. If this issue is important to you please let us know by posting on the AnswerHub or UDN, and Epic will re-open the ticket for further review.
If a project loses connection to perforce and is then closed, the editor will prompt to save changes. If any of those changes require checking out an asset, the editor will prompt to check out the asset. This checkout will fail and the editor will immediately close without successfully saving causing the loss of work.
Result:
Prompted to checkout/save asset however the checkout fails and the editor closes without saving.
Expected:
If the checkout/save fails, editor remains open until closed agaiin
Head over to the existing Questions & Answers thread and let us know what's up.