Classic/GCN D-Pad incorrectly displaying inputs for 2 frames instead of 1

[MKRFirestone]

The D-Pad displays all of its 4 directional inputs as being held for 2 frames instead of 1. I found this by looking at RF Acid's 1:51.121 TF time which used rapid fire, and the D-Pad was held for the duration of the wheelies instead of flickering 30 times per second. The rapid fire on the B button is displayed correctly, and the problem doesn't exist with Nunchuck.

Video of of Acid's inputs: https://drive.google.com/open?id=14Z4F9lO5Cm2OQ2722eCHdTmH5RYVXVz6
Replay: https://www.youtube.com/watch?v=fydr5Ho3XL8
Ghost: https://ninrankings.org/ghostdatabase/ghostviewer.php?id=14669

[AtishaRibeiro]

Oh man I can't believe Github never gave me a notification for this, so sorry.

This is done on purpose, for visibility. Since the input is displayed for 1/60th of a second, if you use it in a 30fps video there's a chance that it might not get displayed.
As to why it doesn't happen for nunchuck, I simply forgot.

[FallBackITA27]

This is done on purpose, for visibility.

This should be an option, imo.