some visual issues with triplets, cresc, and double-barline in 3.0dev from score imported from 2.1

When opening the attached score (saved in 2.1 a week ago) in 3.0dev fade47128 on Windows 10 x86-64, I notice the following things with triplets I'd like fixed:

1. The tuplet bracket should always be horizontal if all the notes are the on the same staff line, even if there is a rest at beginning or end. As happens on meas 28-30 drum part, there is a rest at the beginning of the triplet, which causes the algorithm to think that the bracket should be diagonal:
   
2. meas 77-78 in bass, there is a cresc that happens to cross a newline, and since it is full score, that means it is on a new page. But the problem is that the algorithm is miscalculating the starting xpos of the 2nd half of the cresc, which starts at begin of meas 78, but somehow looks like it is starting way early at meas 74.
   
3. meas 83 tenor, the triplet numeral "3" is overlapping the beam of the triplet. The "3" should be higher than the top of the beam such that there is just enough whitespace to clearly read the "3". I suspect maybe part of the issue is due to the jazz font having fat beams??
   
4. There is a general problem of bracketed tuplets not having their numeral be vertically & horizontally centered in the middle of the white space between the two halves of the bracket. Here is an example of meas 86 tenor & alto part:
   
   All those "3" numerals should be moved a little higher and leftward, such that the numeral is center-justified vertically and horizontally with the line of the bracket. (i.e. the center of the 3 should intersect at the point at the middle of the deleted portion of the line)
5. Double barlines for some reason got imported to believe that they span the entire height of the system, even though they were saved as only spanning their particular staff. Examples are every single double barline:
   
   But note that all repeat barlines were correctly imported as spanning just their staff.