Not really, the organisation behind Manjaro introduces a bug every two years or so (I think their software manager caused excessive requests to the Arch repos at one point?) and sometimes their website’s certificate renewal breaks for a few days, but that’s about it.
The biggest breakage problems occur when the AUR gets ahead of the Manjaro packages and compiles and upgrades fail, but they don’t leave you with an unbootable system unless you ignore a lot of warnings and try to force your way through a doomed upgrade.
It’s no worse than Arch, except installing Arch is so difficult that the people who don’t know why they broke their installs will veer off to another distro instead. Manjaro users also have a tendency to go to the Arch forums for support which annoys the Arch people for good reason, but I doubt they’d be any less annoyed if the people who couldn’t even be bothered to check if they’re on the right forum did install Arch.
Manjaro does tend to distribute code that’s nowhere near stable yet as part of their “standard” releases, which causes annoyances for others (notably the Asahi folks, because the ARM Apple CPUs were nowhere close to prime time yet when Manjaro announced Apple support based on Asahi) but the same can be said for Arch, or any Arch split-off like Endeavour, because bleeding edge support will always be painful for new software packages.