Created attachment 110873 [details]
I have attached a pptx and ppt saved with Powerpoint. PPT displays correctly, the PPTX has the following issues in 188.8.131.52.beta2:
- Charts are missing titles.
- Wrong rotation of vertical axis labels.
- Wrong orientation of X-axis labels and not wrapping text (causing every other label to disappear). Orientation behavior for the X-axis seems to be length dependent.
The missing legend label on the lower left chart is not really an issue. A 3rd data column was used as a spacer and this extra label confused the legend. Removing the text from the 3rd column before importing will make the legend display properly.
Created attachment 110874 [details]
PPT displays correctly
I can confirm with Version: 184.108.40.206.beta2+
Build ID: e1de94244c1b0419c1c3415c02381e8b7a87abe0
TinderBox: Linux-rpm_deb-x86_64@46-TDF, Branch:libreoffice-4-4, Time: 2014-12-14_11:45:23
Fixed in master for 5.0.