Arrow and distance annotation don’t appear in PDF documents, we can see the comments but not the annotation. I made the test by the Spring Demo Aplication and by Java Samples.
Git project: https://github.com/groupdocs-total/GroupDocs.Total-for-Java.git
Git branch: main
Git revision: 7222ea0f
Browser: Chrome Version 92.0.4515.159 (Official Build) (64-bit)
SO: Windows 10
Java version: 1.8.0_281
Exemple file: input.pdf (6.3 KB)