[r777r]

Device

Onyx Boox Note Air 3

Firmware

Latest official firmware version installed

Issue

Some EPUB files cannot be opened in KOReader.
• Example: a specific EPUB book (attached)
• The same file opens perfectly with the default Onyx built-in reader (NeoReader) without any issues.
• In KOReader, it fails to open (no text is displayed / error message shown).

Steps to Reproduce
1. Open KOReader on Onyx Boox Note Air 3
2. Try to open the attached EPUB file
3. Observe that the book does not open properly

Expected Behavior

The EPUB file should open normally in KOReader, just like in the default Onyx NeoReader.

Actual Behavior

KOReader cannot open the EPUB file.

Attachment

EPUB file is attached for testing.