When using plone.api.content.create together with Dexterity types which have behaviors with custom behavior factory classes (e.g. with the behavior attribute test123 which sets a marker interface in the behavior factory class instead of an attribute), then content creation leads to unexpected results.
E.g. plone.api.content.create(container, "TestType", "testid", "testtile", test123=True) sets an attribute on the content object instead of a marker interface.

This could be solved when using plone.dexterity.utils.createContentInContainer.

Related:

• Use createContentInContainer for Dexterity instead of invokeFactory in plone.api.content.create #318
• api.content.create lacks schema validation #415
• Setting text field in create fails on Dexterity #300