Chords and ties on keyboard entry
I looked for something posted on this particular bug, but didn't see anything. Under MS 1.0 (and 1.1 r4387) if you enter new note to a chord followed by +, the existing note on the following chord will disappear leaving the tie behind, and the new note will replace it.
1. Create a new score.
2. Enter C, + to create two C notes tied.
3. Cursor left and enter shift-A, + to create a chord CA
4. On the next chord, the C will disappear (leaving the tie).
See http://musescore.org/en/node/11150 for the pictures. I don't have them to post anymore.