Multimeasure rest regressions in MuseScore 2.0
Two issues here—one with selection, one with display.
A standard way to select a range is to click one note or rest, hold down the Shift key, and use the right or left arrow key to extend the selection. (I'm all the more likely to do this because holding down Shift and clicking not exactly on a note head now leads to a multiple note selection, not a range selection—perhaps something I should file a bug report for? Never mind for now.)
However, in MuseScore 2, if the initial note or rest is just before a multimeasure rest, attempting to select to the left—that is, holding down Shift and hitting the left arrow—actually ends up selecting the entire score to the right. Bug No. 1.
Bug No. 2: in MuseScore 2 multimeasure rests are much wider than they are in MuseScore 1, or in any printed sheet music I've ever seen. Aside from the obvious compatibility issue—layout in a score from 1.3 being different in 2.0—this makes for ugly and difficult-to-read music, with the multimeasure rests often taking up most of the space on a line. It may not be entirely erroneous to think that the number of measures in a rest should have some effect on its width, but in MuseScore 2 this is taken way too far. I'd rather have them all be one measure wide again.