At 75px the year was being replaced with "2..." after select2 added its "X". At 85px this doesn't happen any more.
@@ -265,7 +265,7 @@ body.sonata-bc {
}
.sonata-bc div.sonata-medium-date select {
- width: 75px;
+ width: 85px;
.sonata-bc div.sonata-medium-date div {