When moving between scenes using Portal, a bug occurs where objects nested under UI nodes have their shape and position unexpectedly overwritten, causing them to disappear from the UI display.
Regarding Portal, we previously reported issues with BGM interruption and frequent crashes. Due to the excessive number of bugs, using this Node has become difficult.
After some investigation, I’m not sure of the reason, but it appears that an object (the heart) from the UI layer of the previous scene has remained in the next scene and is also protruding outside the UI layer.
Since there doesn’t seem to be any unusual settings, this is likely a bug. I will report this to the development team.
The UI_heartob object is part of the player group, so it was being identified as a player during scene transitions and forcibly moved to the portal layer. If the group is set to something other than “player,” it will not be moved.
Although the behavior may initially appear to be a bug, it is actually by design. This is because the system references the group to move all objects belonging to the player group at once, such as other players during multiplayer or child objects.