Ideally they should be, yes.To clarify all Joomla 4 tables need to be utf8mb4_unicode_ci collation?
I don't see what that would have to do with CB. It's a regression in Kunena as they've noted.Regarding the "stdClass as array: error, there was a recent post about the issue. Seems to need adding back code for their CB integration as indicated here:
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