Style | General | Articulations: anchors not saved

Context: today master, self compiled under Linux Mint 17.

Steps:
1) Open or create a score whatsoever
2) Menu "Style | General...", tab "Articulations, Ornaments"
3) Change the anchor of any articulation
4) Press [OK] or even [Apply] and then [OK]
5) Re-open the same dialogue box

Result: the modified anchor reverts to its original value.
Expected: the modified anchor is saved.

Note: the other numeric values of that dialogue ("Note head distance", "Staff distance", ...) ARE saved.