Why did the Catholic Church find the elaborate polyphonic versions of the Mass to be problematic?

The Ordinary of the mass employs texts that remain the same for every mass. ... In about 1300, polyphonic cycles of the Ordinary (having two or more sections musically related to one another) appeared.

Explanation:

This is very easy if you read in between the lines and pay attention in music

we could tell by the rotten smell, that something putrid was in our trash can.

i'm not sure i completely understand your question, but i will do my best.

i think the answer you are looking for is sequence. (see below)

a repeated melodic fragment would be best defined as repetition, while repeated chords (different or the same) could be a chord progression. however, you then mentioned the chord and melodic fragment beginning on higher or lower pitches, in that case, the answer could be best defined as a sequence. the definition of a sequence is as follows: "the restatement of a motif or longer melodic (or harmonic) passage at a higher or lower pitch in the same voice."

let me know if this !