MuseScore 0.9.6.1

1. Create a new score
2. Enter a quarter C
3. Enter a quarter D
4. And two 8th grace notes C and D in front of D
5. Try to tie the first quarter C with the first grace 8th note C

Actual result : It's impossible to create a tie between a note and grace note. (but it's possible to tie a grace note to a note)
Expected result: It should be possible.

Workaround : Use a slur between to non grace notes and shorten it.

First reported by Widmung, a screenshot is provided