[FC] No glitchy lines showing up on the screen

[PikaSamus]

Describe the bug There are supposed to be glitchy lines that show up for a frame occasionally when playing some games, like Super Mario Bros. or Zelda II.

To Reproduce Steps to reproduce the behavior:

1. Open Super Mario Bros.
2. Play the game for a few levels
3. See that there are no glitchy lines that show up on the screen

Expected behavior There should be lines showing up occasionally for one frame.

Screenshots Screenshot from Mesen demonstrating what should be happening sometimes:

Additional context Mesen's documentation describes it as "When enabled, a known hardware bug that occurs on the first write to the $2005/$2006 registers (or any write to the $2000 register) when the write occurs at cycle during rendering. This glitch is known to occur in some licensed NES games and usually results in a single scanline displaying incorrectly."