If a liner seal had gone, then you will get water in the sump, not steam, unless the steam is coming out of the oil filler cap!
Where is the steam coming from?
When i did my head gasket, I had steam from the exhaust for a few hours, as I presume a lot of water had gone into the exhaust, though not sure how!
It did eventually clear up, and not lost a drop of water since!
Also inlet manifold gasket, and of course head gasket, can case steam from the exhaust!
Peter