Toolbar Icons Are Shown as Text
Sometimes toolbar icons are shown as text. If this issue occurs, it means the
PSPDFKit.bundle either can’t be found or is outdated. Make sure you’ve added a version of the bundle that came with the version you’re currently using PSPDFKit with.
Xcode also sometimes holds on to caches, so follow these steps to clean them:
Perform Clean on your project.
Delete Xcode’s build folder (if its location was customized).
Reset the iOS Simulator, or, if you deploy to a device, delete the old app.
Build again and see if the issue is still there.