In non-default themes, Text are not fully rendered (bottom part missing)

[BakaJzon]

Describe the bug
Poor English, see screenshot below.

To Reproduce
Steps to reproduce the behavior:

1. Using any non-default color
2. Open a Chinese book (actually, only specific books)

Expected behavior
Chinese fonts should render correctly in other themes (same as in the default theme)
Like the second screenshot below.

Screenshots
Nord Color (And any other color)

Default Color

Version:

• Foliate version: 3.1.0-2
• OS/Distribution and version: Arch Linux
• Desktop environment: KDE Plasma 5 (Wayland)
• Installation method: pacman

Additional context
Hi-DPI 150% scaling
Font: Noto Sans/Serif CJK SC (both have rendering issues)
Line Height: 1.5
Specific book: 《幻象》(The Image: A Guide to Pseudo-Events in America) [美] 丹尼尔·J. 布尔斯廷 Daniel J. Boorstin, 南海出版公司, 2023-06, ISBN 978-7-5735-0256-8
EPUB File MD5: b734772ac095f73ced6426a0ac958296/6363910bd5dc152a48bdb44456e72986 (tested two)

Override Publisher Font has no effect on this bug.

[johnfactotum]

It's not specific to any language or font. This is caused by 29eed7e. See https://stackoverflow.com/q/13117993.

A solution would be to force the background to be transparent, but see readium/readium-css#68 for a case where the background is expected to be opaque.