[BUG] Dropped items when sequencing in a specific way

[j-mie6]

Description

If a bunch of sequences are aligned in a specific way, one of the sub parsers is dropped (in this case, the 4th)

Reproduction Steps

val bug = ((item <* item) *> (item <* item)) <* (item <* item)

Expected behavior

Should parse 6 items in a row, actually only parses 5.

Additional context

Parsley Version: 4.2.1
Scala Version: 2.13.10

Thanks to Mithun Sri, Devin Fernando, Shweta Banerjee, and Taeho Kim for identifying this bug.