Bug: Enabling "Swing" ignores four or more contiguous 16th notes, previoulsy entered.
This is a very specific bug. Enabling Swing in Style > Score or adding the text element "Swing" alters the ontime of previously entered notes, except when there is three or more contiguous 16th notes. To duplicate this bug, enter four 16th notes in a score (e.g., 2/4 time), with swing disable, the default setting, in Style. Enable Swing in Style. Check the Piano Roll Editor and see that the ontime of these four 16th notes have not been altered to reflect the enabled Swing ratio--they remain "straight". Now enter four 16th notes in the next beat. Playback and hear the difference between the pre and post Swing enabling beats.
I've attached a score to test. Enable Swing in Style. Compare the one beat measure that has four 16th notes and the other eight 32nd note one with the other beats with less than four notes. Any beat over three 16th notes are not swung.