TetrisGYM 6.0.0 ROM hack rendering issues

[nick3252]

I'm using NESTang 0.10 on a Tang Nano 20k board.
During level loading/level transitions, there are rendering issues that briefly occur. This issue is not visible on an emulator, and consistent between sessions.

The author of the ROM hack commented on the issue: kirjavascript/TetrisGYM#102 (comment)

I demonstrate this in a video, showing the main menu of the ROM as well as the current settings. I turn on dark mode to show the effect stronger, but the issue still persists with it disabled. I load in game 5 times on both NESTang and Mesen, and the effect only shows on NESTang.

Untitled.mp4