I was watching some runs and noticed that people are doing 2 skips that I do not understand / know what to google for.

On EP2 there are 2 keys that on a normal playthrough require a little effort to get; Blue and Yellow.

I've noticed that speedrunners will skip the long interactions required to usually unlock them with some movement that seems to "bump" them into the key. I tried to analyze the videos myself and figure out whats going on but without any luck

Anyone got a good explanation of the tech? (feel confident it has a well known name and I'm just a noob)

I was trying to practice the blade skip and finally got it to work but noticed the flames protecting the lift door are still activated..

Is this because I died on my first attempt and hit retry to continue testing? or was this patched by Capcom at some point in the last year?

Can't seem to find any information on patches that would have changed this and figured someone here would probably know (playing on latest Steam version)