All of the old UIControl components (buttons, radio buttons, checkboxes, edit fields, text areas, list boxes, dropdowns, sliders, toggle buttons, and text labels) are missing in App Designer.
This a bug in version 19.2.0 of the "GUIDE to App Designer Migration Tool for MATLAB", which has subsequently been fixed in version 19.2.1.
To resolve the issue, uninstall version 19.2.0 of the tool and reinstall the tool to get the latest version (i.e. version 19.2.1 or later). Refer to the following link for the latest updates and for more information:
This bug has been fixed with version 19.2.1 of the migration tool and is now available. The workaround described above is no longer need. If you have version 19.2.0, please uninstall and reinstall the tool to get the latest version.
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