Server-side loading happens smoothly on the first attempts, but after a few reloads it gets discarded. Logs this:
Warning: flattenChildren(...): Encountered two children with the same key, `.$535988`. Child keys must be unique; when two children share a key, only the first child will be used.
Server-side loading happens smoothly on the first attempts, but after a few reloads it gets discarded. Logs this: