Phenomenon 1:

When opening a PDF document in Google Drive using the Lumin PDF plugin in the Chrome browser, Lumin does not fully display the original bookmarks. However, other methods (such as Adobe) display all the bookmarks correctly with the same pdf document. See the attached image comparison showing the difference (left side of the image shows Adobe opening, right side shows Lumin opening). This is inconvenient for viewing pdf content.

Phenomenon 2:

After modifying the document content using Lumin and saving it to Google Drive, the missing displayed parts of the original bookmarks are lost. This has a significant impact.

I hope this confirms above issues, because I really want to continue using Lumin PDF once they are resolved.