Nickelodeon Tak: The Great Juju Challenge: Resolution scale > 1x causes black overlays to not scale properly

[blakeplusplus]

Title

https://xemu.app/titles/545100f4/#Nickelodeon-Tak-The-Great-Juju-Challenge

US release. I've completed the pre-submission checklist.

Bug Description

For in-game cutscenes (not FMVs), it appears that Tak overlays black boxes on the top and bottom of the screen, obscuring any content behind them. If you have an increased resolution scale (beyond 1x), these black boxes do not scale correctly, resulting in a thin but visible gap between the black boxes and the edge of the game. Issue occurs on either backend.

Steps to reproduce:

1. Before or after starting game, increase resolution scale to anything above 1x
2. Start a new game
3. Skip the intro FMV (optional probably)
4. During the in-game cutscene, notice the lines at the top and left side of the screen showing the game's scenery underneath

Expected Behavior

These lines should not appear. Expected behavior is visible at 1x with either backend.

xemu Version

Version:      0.8.71
Branch:       master
Commit:       e02e41ccaaceffcad816cfb554dd1195767e952d
Date:         Fri Jun  6 03:00:46 AM UTC 2025

System Information

CPU:          AMD Ryzen 7 7800X3D 8-Core Processor           
OS Platform:  Linux
OS Version:   Freedesktop SDK 24.08 (Flatpak runtime)
Manufacturer: AMD
GPU Model:    AMD Radeon RX 7900 XT (radeonsi, navi31, LLVM 19.1.7, DRM 3.63, 6.15.2-arch1-1)
Driver:       4.6 (Core Profile) Mesa 25.1.1 (git-7485541cc3)
Shader:       4.60

Additional Context

This should maybe be linked to issues 979 & 2217.