When I open a document that has a drop shadow applied, the shadow papers misplaced and distorted. If I turn the drop shadow off and on again, it fixed the issue. Also if I open a document that has an Outer Glow applied, it appears too opaque and too large. It seems that if I apply an Outer Glow to to the Object effect , save and close the document and reopen, somehow an Outer Glow is also applied to the Text effect. Other similar issues as well.
InDesign 13.0.1 (but was the same in 2017)