Created attachment 147304 [details]
testfile with shape and screenshot
Open attached file. It contains a shape, which consists of two path elements. One of them uses the identifiers l, t, r and b in its geometry. The shape is rendered totally wrong. The second slide contains a screenshot of how it looks in PowerPoint 365.
I see the error already in Version: 220.127.116.11.alpha0+
Build ID: 40b1e8266e47792d354cd457c652bfb0f0a21e69
TinderBox: Win-x86@62-TDF, Branch:MASTER, Time: 2015-02-11_00:13:43
Confirm with Version: 18.104.22.168.alpha0+
Build ID: 1ee8d4f63adf3113a4733a479c8faf9eb65f7b8d
CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3;
Created attachment 164970 [details]
The example shape copied to docx format
Also happens when the example shape is copied to Word, saved as docx and opened in Writer. Not PPTX specific.