You did change by moving blocks under component, that is why It doesn't work for old themes.
I have fixed problems.
UNSOLVED Chat-Notification in multiple tabs
Basically have multiple NodeBB-Tabs open. Then you when recieve a message, the <title> tag changes to notify you of a new message in the Chat. But once you read the message, all other tabs still notify you of new messages although you already read it.
This also applies to the FAB-Button in the bottom right, which shows the number of new messages. This also doesn't get updates with multiple tabs.
I see the same...