Created attachment 159793 [details] Sample PPTX document Exporting this sample slide from Office 365 LibreOffice is able to open and view it just fine. Only the text in the four arrow elements is horizontally shifted too far to the left.
Created attachment 159794 [details] This is how it looks in Office 365
Created attachment 159795 [details] This is how it looks in LO - text elements partly invisible (and farther to the left)
Confirmed in LO 7.0.0.0.alpha0+ (f924658e45f256544e43c3fdb2af9b585d0f0933) & 3.5.0.3 / Ubuntu. In 3.3.0 none of the objects are shown.