Major software updates bring a few bugs, regardless of the platform. The new version of Apple’s operating system macOS, Catalina also came with some bugs this time, compared to previous versions, and the number of them is slightly more critical.
According to Apple Insider’s report, the problem arises when carrying messages and syncing with other devices. For some users, emails will disappear completely. Other problems can occur during backups and downloads in Mail, and messages can disappear.
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Michael Tsai, the developer of EagleFiler, which works with Apple Mail for macOS, advises users not to update the Catalina at least until the bugs are fixed.