Impossible to select all beams in a certain voice

Nightly, November 13 ( 3486e76) / Windows7

1. Open "My First Score"

2. Fill the first measure with eighth notes, at first in Voice 1, then in Voice 2, and finally in Voice 3.
For example:

3. Select the first beam placed lowermost (Voice 2, green) -> More -> Same voice

Expected result: Only the beams of this voice 2 must be highlighted.

Actual result: All beams of all voices are selected-highlighted.
Consequently, it is impossible to individually choose the direction of their stems, or other operations (eg, align their height with those of another voice, etc.)