Created attachment 172006 [details]
Example file from PowerPoint
Attached example document was made in PP and demonstrates all table border styles PP offers.
These are correctly imported to Impress, but upon save to PPTX all of them is converted to the default continuous line.
Steps to reproduce:
1. Open attached file
2. Save as PPTX, reopen
Table border styles are lost.
Table border styles are retained.
Version: 22.214.171.124.alpha0+ (x64) / LibreOffice Community
Build ID: 6c8ca02c5935a800cff70f3c173319b454b63c41
CPU threads: 4; OS: Windows 10.0 Build 18363; UI render: default; VCL: win
Locale: hu-HU (hu_HU); UI: en-US
Created attachment 172007 [details]
The original file saved by Impress
Created attachment 172008 [details]
Screenshot of the original and exported document side by side in Impress
True. Wrong in LO and MSO.
Let's note here that saving to PPT is similarly wrong, until it has it's bug.