[XGC-134] Some PNGs are rendered incorrectly (Regression 2.7 -> 2.8)

• Type: Bug
• Status: Open
• Priority: Critical
• Resolution: Unresolved
• Affects Version/s: 2.8
• Component/s: general
• Environment: Java 17.0.5 (Adoptium Temurin) on Windows x64.
• Assignee: Unassigned
• Reporter: Marius Thesing
• Created: 25/Jan/23 14:35
• Updated: 11/Feb/23 15:41

Description

After upgrading our application from FOP 2.7 to FOP 2.8 we noticed that some PNG files are not rendered correctly in the PDF. While I initially thought this was a problem in FOP, I can reproduce this with FOP 2.7 + XGC 2.8, so I guess it must be an issue in XGC 2.8 .

Unfortunately I can't share the exact PNG file because it contains the logo of one our customers. When I try to modify the PNG in any way, I can't reproduce it anymore. I also couldn't find another PNG to reproduce this with.

Basically the PNG is rendered 3 times horizontally and a black bar appears below the 3 images. I attached a comparison between XGC 2.7 and XGC 2.8 . These are (obviously modified) screenshots of the PDF generated by FOP.

There were hardly any changes between XGC 2.7 and 2.8. Looks like this may be related to XGC-132 ?

This is with Java 17.0.5 (Adoptium Temurin) on Windows x64.