Why do you sound surprised? The IDF have consistently turned a blind eye (if not actively co-operated) to settler price tag violence. Nothing would suit Israel more than for violence to erupt and thereby fitting in with the Israeli story that the Palestinians are terrorists who are not yet ready for statehood.
Donald Trump: Israeli settlement construction in West Bank should 'keep going' (Haaretz)
from the article: Political war between Israel and Palestinians enters critical stage