• Jun 14, 2019 Last week, Apple announced Project Catalyst for macOS 10.15 Catalina, which makes it easy for developers to bring their iPad projects to macOS as native Mac apps. We are excited that Project Catalyst will enable us to bring Twitter back to the Mac by leveraging our existing iOS codebase.
• Sep 25, 2019  What's the news? Last week, Apple announced Project Catalyst for macOS 10.15 Catalina, which makes it easy for developers to bring their iPad projects to macOS as native Mac apps. We are excited that Project Catalyst will enable us to bring Twitter back to the Mac.

May 26, 2020  Here are steps to fix macOS Catalina 10.15.5 Installing Problem Force Restart. Press and hold down the Command (⌘) and Control (Ctrl) keys along with the power button (or the ‌Touch ID‌ / Eject button, depending on the Mac model) until the screen goes blank and the machine restarts. May 28, 2020  Yesterday Apple released their new macOS Catalina 10.15.5 software update for the Mac and now we get to have a look at the latest version of macOS in a. Oct 07, 2019  With Mac Catalyst, a new technology in Catalina that makes it easy for third-party developers to bring iPad apps to Mac, users will begin to see their favorite iPad apps in Mac versions, including Twitter, TripIt, Post-It, GoodNotes and Jira, with more to come.

Twitter says a bug in macOS 10.15.1 aka Catalina stops users of the social network's desktop Mac app from entering certain letters in account password fields.

When attempting to type their passwords into the application to log in, some characters are ignored, specifically 'b', 'l', 'm', 'r', and 't'. That would make it impossible to submit passwords using those keys to sign into Twitter accounts; pass phrases can be cut'n'pasted just fine.

According to Twitter in-house developer Nolan O'Brien, these particular keypresses are gobbled up by a regression associated with the operating system's shortcut support. Normally, users can press those aforementioned keys as shortcuts within the app to perform specific actions, such as 't' to open a box to compose a new tweet.

Something changed within macOS to capture those shortcut keys, rather than pass them to the password field in the user interface as expected. So, in other words, when you press a shortcut key in Twitter when entering an account password, the keypress is ignored in that context rather than handled as a legit password keypress.

Other programs may also be similarly affected.

Here's how O'Brien put it, referring to Apple's UIKit API:

Root cause is Catalina regression that fails keyboard inputs when a UIKeyCommand is registered for the same key. UIResponder chain regression most likely.

— Nolan O'Brien (@NolanOBrien) October 30, 2019

And here's a video of the regression in action:

Twitter for Mac is incapable of accepting certain letters in the password field. Not special characters. Regular letters. pic.twitter.com/QMDJyc4uRO

Twitter For Mac Catalina Beach

— Mike [Zom]Beasley 🧟‍♂️ (@MikeBeas) October 30, 2019

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Twitter For Mac Catalina Island

There's no word yet on when a patch for the issue might be out. Apple did not respond to a request for comment. Chalk this up as another potential weird bug of the week.

This is one of several headaches that Mac fans who opted to update to Catalina are having to deal with in the early days of Apple's latest OS edition.

Developers have lamented the sorry quality of the release, in some cases even likening it to Windows Vista, while users have reported a number of performance and stability bugs introduced by the update.

Those who have not yet updated to macOS 10.15 may want to hold off for a bit longer while both Cupertino and third-party devs iron out most of the wrinkles in the platform. ®

PS: Apple's fiscal 2019 full-year financial numbers were out on Wednesday: $55bn profit, down seven per cent year-on-year, off $260bn in sales, down two per cent, in the 12 months to calendar September 28.