Test 2 - Balisage Musical (Anacrouse, Refrain, 3 Couplets, et Reprises locales dans Couplet1 = KO

Hello, Jojo-Schmitz,

To me, the Google translation seems sufficient to explain the problem.
I speak english fluently, but am unfamiliar with the english equivalent for the french musical terms.

For the subject file which do not run as expected,
here is the sequence of measures as I expect them to be played (by humans & by MuseScore)

"andre.gagnoud@laposte.net - Test 2 - Balisage Musical (Anacrouse, Refrain, 3 Couplets, et Reprises locales dans Couplet1 = KO.mscz"
=> This file is, of course, a "contraction" of real cases (not uncommon ones !) I have often seen.

Anacrouse : m1
Refrain : m2, m3
Couplet 1 : m4, m5, m4, m6
Refrain : m2, m3
Couplet 2 : m7
Refrain : m2, m3
Couplet 3 : m8
Refrain (part 1/2) : m2
Coda : m9

Thank you for your analysis of this case.
Have I designed it improperly ?
What should I change withe the MusiScore tools, yet attempting to achieve the desired sequence describes above.

Please keep me informed. :-)