Quick one guys...

At a bit of a loss. Iv got bubbles showing on my dipstick. I understand this is normally worn o rings between the sump and block to supply the head but my engine is newly built and was built in a stand so nice and easy and I'm pretty sure these seated properly. They were new oem, gasket is Volvo oem, oil level is correct, no leaks or oil loss, Pcv new and functioning well. Any ideas?? Could it be the type or oil being used? Also have a suspicion it may be related to oil cooler lines as one is slightly misted with oil but nothing more, can air enter these lines or anything? Don't really want to remove the sump and do it again!