[Trunk] Overlapping paste corrupt

1. Open attached score.
2. Copy the full bar.
3. Select the fifth quaver.
4. Paste.

Expected result: The quavers paste into the next bar, with a minim rest next to them.
Actual result: The four quavers paste in the next bar, but there's a corruption in the next bar (no minim).

Workaround: The bar seems fixable by selecting the first note in the corrupt bar and change to semibreve.

Using MuseScore 2.0 Nightly Build (4300) - Mac 10.4.11.