Mitch v1.2.7 could be considered a critical update.

• Fixed automatic update checking. It was not working at all in v1.2.6, please update the app manually, or by going to the Updates and refreshing.
• Updates tab now shows a loading animation after clicking “Update” button.
• Outdated files are now always deleted upon update.
• Fixed app crash when refreshing the Updates tab and then leaving it before the refresh finishes.
• The Updates tab now shows the new upload name instead of the currently installed name.
• Fixed bug where the Library tab could not be scrolled vertically.
• Small UI fixes and improvements
  • If a file’s name does not find in one line, it will now scroll horizontally.
• Mitch will now show an error when you try to apply an update that’s no longer accessible.

Again, the last version of Mitch has broken update checking, please update to this version when you can!