[Bug-1571]How do you prevent label from overflowing vertically?

If you also want it to use ellipses (…) you will have to add this into theme.css or through injection

for all lables:

.ia_labelComponent > span {
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}

with a styleclass named ellipseLabel put this in backgroundimage:
}.psc-ellipseLabel > span { text-overflow: ellipsis; overflow: hidden; white-space: nowrap; }{