Bug 157529

Summary:	FILEOPEN PPTX: Text shows that is invisible in PowerPoint
Product:	LibreOffice	Reporter:	Gerald Pfeifer <gerald>
Component:	Impress	Assignee:	Not Assigned <libreoffice-bugs>
Status:	NEW ---
Severity:	normal	CC:	aron.budea, kelemeng
Priority:	medium
Version:	6.4 all versions
Hardware:	All
OS:	All
See Also:	https://bugs.documentfoundation.org/show_bug.cgi?id=149588
Whiteboard:
Crash report or crash signature:		Regression By:
Bug Depends on:
Bug Blocks:	36766, 79512, 139900
Attachments:	Sample slide (PPTX) Screenshot with issue highlighted in red The example file in PP 2016 and Impress

Description Gerald Pfeifer 2023-09-30 11:18:44 UTC

Created attachment 189904 [details]
Sample slide (PPTX)

Both in edit mode and in presentation mode Impress shows two text boxes
"Network" in green, which PowerPoint shows in neither mode.


Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: f8e591ab9182e0a61c4ae5b8f77b166fcaeaa877
CPU threads: 8; OS: Linux 6.5; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US

...and all the way back to (at least) LibreOffice 6.4. This does not 
appear to be a regression.


This looks strikingly similar to bug #149588 which was about transparency
at SolidFill. It is not addressed by the fix there, though.

Comment 1 Gerald Pfeifer 2023-09-30 11:25:49 UTC

Created attachment 189905 [details]
Screenshot with issue highlighted in red

Comment 2 Gabor Kelemen (allotropia) 2023-10-02 18:11:59 UTC

Created attachment 189960 [details]
The example file in PP 2016 and Impress

Confirming in 

Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 2902ab24ecc5ffbf4907ea83b2028508b9de6364
CPU threads: 15; OS: Windows 10.0 Build 19045; UI render: Skia/Raster; VCL: win
Locale: en-US (hu_HU); UI: en-US
Calc: threaded

We have fontwork here, and the network word has seemingly a different font color + transparency given on different letters: 2c8685 and white color plus 100% transparency in PP, becomes 2c8685 and no transparency in Impress.

Comment 3 Gerald Pfeifer 2024-06-06 14:36:46 UTC

Confirming this is still the case with

  Version: 24.8.0.0.alpha1+ (X86_64) / LibreOffice Community
  Build ID: 9e873da55c925b0a960950e9edd1e615e54b8edd
  CPU threads: 12; OS: Linux 6.9; UI render: default; VCL: gtk3
  Locale: en-US (en_US.UTF-8); UI: en-US