After upgrade to 9.3 headings are missing in various reports. Please see figure below.
You have updated reports' content by clicking the [Update Content] button on OneClick Admin Website -> Administration -> Report Manager -> Manage Business Objects Content page, but the problem is persisted.
The issue is caused by missing "English (United States) [en-US]" language settings in Internet browser you are using to access InfoView. Since Spectrum 9.3 release localization is supported, so Internet browser settings requires "English (United States) [en-US]" language. Please add "English (United States) [en-US]" language and move this language entry up to the top. And then restart Internet Browser and regenerate the report.
If you use Internet Explorer, click Tools menu and select Internet Options. Internet Options dialog will appear. Click [Languages] button under Appearance section on the General tab and configure the language settings. If you use Firefox, click the Open Menu icon and select Options. Options dialog will appear. Click [Chooses…] button under Languages section on Content tab and configure the language settings.
Please see figures below.