Transposing any C-based chord to A major freezes MuseScore
I'm using SVN 2904 on an up-to-date Arch Linux.
To reproduce create a new score (or use an existing one, no difference), add an instrument, select a note/rest, press Ctrl-K and insert a C-based chord (tested with C, Cm and C7). Then click on the whole measure (or a group of measures including the one with the chord), click Notes -> Transpose, choose A major, confirm and see mscore freeze taking a core to 100% usage.
It must be something that has to do with the chord *and* the transposition distance, because other chords on the same score were transposed fine when the C one wasn't touched. Similarly, the C chord is correctly transposed if I choose another destination key.