The <> brackets in mini-notation step through their contents once per cycle rather than fitting them all into one cycle. "" is monophonic: it plays c on the first cycle, e on the second, g on the third, then repeats — not all three within a single cycle (which square brackets or a space would do). This is how you get a value that changes each bar. Reading <> as a within-cycle sequence is a common source of unexpected rhythm. The grammar is shared by Tidal and Strudel.
Examples
"" // c on cycle 1, e on cycle 2, g on cycle 3 (one per cycle)
“[c e g]” // all three within one cycle (a fast arpeggio)
Assessment
How many notes sound per cycle from "", and how does it differ from “[c e g]”?