Created attachment 151947 [details] Zip file with screenshots of problem and sample Impress files. When using multi-segment connectors between boxes, saving as .odp works fine. If I save as .pptx then re-open the .pptx the lines are not drawn correctly, with the vertices of the connectors moving around from where they should be. Happening in latest stable 6.2.4.2 version of LO. Been happening for quite some time now.
confirm with Version: 6.4.0.0.alpha0+ Build ID: 47a774fbef8c224e4853de3fdd0230b9442bb716 CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3; and Version: 4.1.0.0.alpha1+ Build ID: 863d38fbfa4fb4861e476828c46410602100919
*** This bug has been marked as a duplicate of bug 80236 ***