Conversation Compacting doesn't work and will wipe your answer

This is the second time this happens to me and I stupidly spent 20 min on an answer that was wiped completely.

1. Always copy-paste your answer if long BEFORE submitting.
2. Even better copy paste it into a text or code editor to have a backup.

I lost a least 1h of work on this as the feature doesn't work reliably.