[quyleanh]

Thank you for reaching out. Please refer to the following issue list from SumatraPDF repo [1] [2]. Epub rendering issue like [3] [4].

[1] https://github.com/sumatrapdfreader/sumatrapdf/issues?q=is%3...

[2] https://github.com/sumatrapdfreader/sumatrapdf/issues?q=is%3...

[3] https://github.com/sumatrapdfreader/sumatrapdf/issues/2752

[4] https://github.com/sumatrapdfreader/sumatrapdf/issues/3761