Do not update content when stale.

backend/src/Squidex.Infrastructure/Commands/DomainObject.cs

@@ -314,9 +314,18 @@ namespace Squidex.Infrastructure.Commands
                 await persistence.ReadAsync();
 
                 if (persistence.IsSnapshotStale)
+                {
+                    try
                     {
                         await persistence.WriteSnapshotAsync(Snapshot);
                     }
+                    catch (Exception ex)
+                    {
+                        log.LogError(ex, w => w
+                            .WriteProperty("action", "RepairSnapshot")
+                            .WriteProperty("status", "Failed"));
+                    }
+                }
             }
         }
 

backend/src/Squidex.Infrastructure/States/Persistence.cs

@@ -46,7 +46,7 @@ namespace Squidex.Infrastructure.States
 
         public bool IsSnapshotStale
         {
-            get => persistenceMode == PersistenceMode.SnapshotsAndEventSourcing && versionSnapshot < versionEvents;
+            get => persistenceMode == PersistenceMode.SnapshotsAndEventSourcing && versionSnapshot < versionEvents && versionSnapshot > EtagVersion.Empty;
         }
 
         public Persistence(DomainId ownerKey, Type ownerType,