Arbiter of Ash instance lost after client crash – fragments consumed, cannot re-enter

During an attempt to kill the Arbiter of Ash inside the Burning Monolith, my client crashed. After logging back in, I was placed in my hideout. The Burning Monolith instance was no longer accessible, and there was no way to re-enter the encounter. All Crisis Fragments used to unlock the Arbiter were consumed.

This effectively resulted in a full loss of progress. It took me almost a month to locate the required Citadels and assemble the fragments, and losing all of that progress due to a client crash feels completely disproportionate and unfair.

Steps to reproduce:

1. Enter the Burning Monolith
2. Insert Crisis Fragments to access the Arbiter of Ash
3. Engage the Arbiter fight
4. Client crashes during the encounter
5. Log back in → character appears in hideout
6. Burning Monolith instance cannot be re-entered (the portals are there, but cannot be used)