When you open a 2019/2019 R2 workspace in the 2019 R3 IDE, make sure to manually perform a Migrate and a Full Build to the source code; even though you get no prompts from IDE for Migrate and Full Build.
When you upgrade a target which uses the UI theme feature, from 2019/2019 R2 to 2019 R3, make sure to update the default theme path and use the theme files of 2019 R3: 1) if you have specified to use the default theme path in the target, modify the theme path in the Application properties dialog box (from "%AppeonInstallPath%\Shared\PowerBuilder\theme190" to "%AppeonInstallPath%\PowerBuilder 19.0\IDE\theme"); 2) after creating the application executable file, copy the "theme" folder from "%AppeonInstallPath%\PowerBuilder 19.0\IDE" to the same folder as the application executable file; the folder name "theme" cannot be changed, and the "theme190" folder is not effective any more. For detailed instructions, refer to the section called “Applying a theme” in Users Guide.
