Alignment mayhem

I'm shooting this message out into the dark. I hope you're able to fix the many issues happening with alignment. Here's what I'm running into:

I'm trying to prepare parts and score for a reading this week, and they look terrible despite my best efforts. I feel quite embarrassed to turn this in for an assignment, let alone possibly put these parts in front of professionals. I have manually adjusted every single dynamic, tempo marking, and tempo fluctuation in every single part because they do not line up automatically.

For any element where I've neglected to uncheck the box that says sync alignment with score, the layout will not continue to look the way I leave it when I make further adjustments.

I stayed up for hours correcting the tiny little misalignments that make my parts impossible to read. I am quite frustrated because I just spent about 16 hours this weekend aligning details on my parts all weekend because the automatic alignments don't work only to find that my adjustments didn't save because the adjustments I made to other parts ended up affecting the first ones I fixed already. By fixing other parts, I was (unknowingly) unfixing the parts I had already fixed.

Seriously. I can't begin to describe my frustration.
Why don't the dynamics align underneath a staff automatically in the first place?
Why do the beginnings and endings of rit/accel not go to the same beat on the parts and the score?
Why can't I lock all elements of a part once I've proofread it, so no adjustments to other parts ruin the work I've already done?

I have recorded a few screen recordings and videos, but I can't get them to upload. All I have to share with you is the musescore file. Give me an email directly if you want more details from me.

I appreciate all the work you do, making musescore free. It is still better than Finale (which I was using before), but this is still not how I want to be spending my weekend correcting things I've already corrected.