Created attachment 199330 [details] 165336_shapeTextAlignC.pptx: example document This is related to bug 165336, because there we had a bug that could only be seen by PowerPoint. That indicates that LO doesn't display the same as MSO. So, the example documents in that bug report could also be used. It looks like the same 25.2 commit that causes bug 165336 is the one that is breaking the layout on file open. commit 1d9ce0a67a71e51569cd33c26270eeece587a354 Author: Balazs Varga on Sun Oct 13 20:58:17 2024 +0200 tdf#162571 - sd: Text box expands or shrinks on left or right or both sides, depending on the text alignment. Set the text anchor position based on the first paragraph alignment. These documents have NOT been fixed by bug 165261's commit 837e2cd1c0d79299f470f747b3216c662584b1d2 tdf#165261 - PPTX import: fix text in shape is left-aligned did NOT fix forum-mso-en-11064.pptx, R-L.pptx, or tabs.pptx, I tried to create my own example to try to find out what makes these documents special, but I didn't succeed. Found by Collabora/s mso-test
confirmed that the issue is still seen on master.