What you were expecting to happen, and what actually happened:
Before 5.4, the statement in the article about Valravens was true:
Kill the Valraven before they use the Spell “Feast and flee” and fly away and win the battle against the enemy to gain 2 extra Sigils. If you lose the battle the Valraven won’t drop any Sigils.
Thus, the statement on the help article should be updated to
Kill the Valraven before they use the Spell “Feast and flee” and fly away and win the battle against the enemy to gain 2 extra Sigils. If you lose the battle the Valraven won’t drop any Sigils. If the raven transforms due to Lycanthrophy the Valraven won’t drop any Sigils.
To clear any confusion, the article should also state that a standard transform is safe to do and can still result in sigils. Lycanthrophy is the exception.
How often does this happen? When did it begin happening?
Every time since 5.4 release.
Steps to make it happen again
Compare GoW support article with dev response.
Edit: In my line of work if we had the QA team they do people would die. Thank whichever God you worship they are developing a game and not something that actually matters.
Someone sent it to me in a Discord message (not saying who since that’s against the rules). They either spoke with Salty themselves or it was stated publicly.
If you could ask them where they got their info, I’d love to know. If she did say it publicly, it’d be helpful to have the Twitch clip or post where it was stated.