PDF preview image generate is not working well with pre-filled generated PDF files

[ShaharZohar]

Describe the bug
While using the library to read PDF files and generate a preview image,
the image that generated is from the PDF file is missing parts of the the PDF file.

To reproduce
In order to reproduce this issue, generate a pre-filled PDF file.
Try to load and generate a preview image using the library,
the preview image is missing some parts of the PDF file.

Expected behavior
A clear pdf preview image.

Actual behavior
The image generated by the library is not full and some parts of the file are missing.

Environment details:

• PdfBox-Android version: [e.g. 2.0.27.0]
• Android API version: [e.g. API 32]

Maybe it is something related to this fix that is not working properly -
#487