[BUG] Klonoa 2: wavy text effect renders incorrectly when widescreen patches are in use

[Igetin]

Describe the Bug

In Klonoa 2: Lunatea's Veil (SLUS-20151), when widescreen patches are enabled, the wavy text effect seen on the "Now Loading", "Vision Start", and "Vision Clear" screens renders incorrectly, with parts of the text edges being clipped. This issue occurs on both hardware and software renderers.

Reproduction Steps

1. Enable "Apply Widescreen Patches" in Settings → Graphics → Display
2. Launch the game
3. Start any stage

Expected Behavior

The text effect should render correctly and without cutting off.

PCSX2 Revision

v2.7.43

System details

• Operating system: Linux (Fedora 43)
• CPU: AMD Ryzen 7 3700X
• GPU: AMD Radeon RX 6800 XT

Settings

Default settings, but with the "Apply Widescreen Patches" setting enabled.

Screencasts

PCSX2 with widescreen patches (captured on PCSX2 v1.7.3069, but looks the same as in v2.7.43):

klonoa_2_wavy_text_effect_broken_pcsx2_v1.7.3069.mov

Real hardware:

klonoa_2_wavy_text_effect_working_real_hardware.mov