Warp makes triplets, but not quintuplets

Here’s a clumsy video of me trying to have five notes play evenly in the time of four 16th notes. In other words a 5-against-4 polyrhythm. I select the five 16th note hi hats, and when I press the [-] button to make them play evenly in the time of four 16th notes, the five play a non-evenly spaced rhtyhm, and the kick track also changes, losing its 4-on-the-floor rhythm. The five 16th notes sound like they warp into two 16ths, followed by two 32nd’s, followed by one 16th, which is not what polyryhthm means.

I thought it’s supposed to make a quintuplet out of the five 16th notes, that is 5-in-the-time-of-4 and evenly spaced, but that’s not what happens. What am I not understanding?