Green line at bottom of screen when starting GameCube VC injections on Wii U

[ghost]

When starting any GameCube game injected with UWUVCI on my PAL Wii U, the Wii logo appears first as usual. After that, a green horizontal line briefly flashes at the bottom of the screen before disappearing. The game then continues to boot and runs normally without any issues. The files boot.dol and meta.xml are located in the /apps/nintendont/ folder on the SD card. In the root directory of the SD card is the config file, with only Auto Video Width and Memcard Emulation (59) enabled. A video is attached for reference.

https://github.com/user-attachments/assets/6db74e23-cac7-4c78-9d60-a0c073f704b4