The most recent update to QT 5.13, along with the related akonadi / libakonadi updates, has introduced a serious bug that affects postgres users, and apparently, those of us who use a central mariadb instance, instead of letting akonadi launch it's own (a source of pain for most akonadi users, I suspect).
The short version is that the way one of the QT libraries handles table names has changed, and it wasn't case-sensitive-- but is now, and akonadi gets very confused.
Upstream appears to have fixed this within the past few days-- Would it be possible to get akonadi / libakonadi 19.04.3-1 pushed out to Manjaro "real soon now"? I'm currently unable to use any akonadi based applications.
I admit, I don't know the process for packages going from Arch -> Manjaro, so this might be something that will "just happen", but I assume there's some level of curation.