Shadows not rendering when exporting diagram in draw.io 24.6.4 or higher versions

[mmattamala]

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Describe the bug
I'm using draw.io on a Mac M1. I installed the arm64 version. I observed that shadows will not render correctly in exported files when using release 24.6.4. I attached some examples below.

To Reproduce
Steps to reproduce the behavior:

1. Using draw.io 24.6.4 or higher
2. Add a rectangle with shadow enabled in the style tab of the object
3. Export to PDF
4. The shadows should not render:

Expected behavior
The shadows should render with the desired opacity. This is the result I obtained exporting the same draw.io file with release 24.6.1

Screenshots
I added some above

draw.io version (In the Help->About menu of the draw.io editor):

• draw.io version 24.6.4 (or higher)

Desktop (please complete the following information):

• OS: MacOS (M1)

Additional context
It might be related to this other issue #1750

[zerzerzerz]

I meet the same issue on version v25.0.2. When export to PDF, the shadows are not rendered. But in PNG format, everything works well.