It seems we can no longer just replace Cyberduck app via a simple DMG package from Composer.
When we try replacing version 4.9.1 with 5.x, or version 5.x with 6.x using this method, the app launches for a second and then quits.
If we install it manually onto a computer that had preferences and bookmarks from the previous version, it doesn't open the main window, or bookmarks can't be clicked on. If we downgrade the app back to the previously installed version, everything works again.
Has anyone else seen this behavior and know of a fix?
Cyberduck.io support has not been very helpful beyond recommending to download the latest version.
