Snake-Eye’s Populus does not trigger its effect to add a fire to the spell and trap zone when sent to the grave BUT ONLY IN CASUAL GAMES. The effect works in test-hands and private rooms, but doesn’t trigger in casual.
Bug reproduction steps
Normal/ Special summon Snake-Eye Populus
Send to grave as link material for link-1 (eg. Linkuriboh)
… no trigger window given (again, only in casual games, test-hands it works fine).
Screenshot OR error code
Longer video here: Casual Game Example - Google Drive
It should behave in the same way as test-hands & rooms. Snake-Eyes Populus should trigger in the grave when sent there (even as cost). It should give the option to set a fire in the spell and trap zone.
What OS are you using