Bug 155613

Summary: Transparent PNG as background makes automatic color white
Product: LibreOffice Reporter: Felix Rudolphi <felix.rudolphi>
Component: ImpressAssignee: Not Assigned <libreoffice-bugs>
Status: NEW ---    
Severity: normal CC: stephane.guillou
Priority: medium Keywords: bibisectRequest, regression
Version: 4.1.0.4 release   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
See Also: https://bugs.documentfoundation.org/show_bug.cgi?id=75931
Whiteboard:
Crash report or crash signature: Regression By:
Bug Depends on:    
Bug Blocks: 108355, 157844    

Description Felix Rudolphi 2023-05-31 19:34:11 UTC 
Description:
When setting the PNG (from https://sciformation.works/intern/arrows-1577983_transparent_gradient.png mostly transparent, some arrows, from Pixabay with slight modifications) as background, text color automatically switches to white (which is unreadable)

Steps to Reproduce:
1.New ODP
2. Slide > Background image
3. Select file from https://sciformation.works/intern/arrows-1577983_transparent_gradient.png

Actual Results:
White text

Expected Results:
Black text


Reproducible: Always


User Profile Reset: No

Additional Info:
Version: 7.5.3.2 (X86_64) / LibreOffice Community
Build ID: 50(Build:2)
CPU threads: 8; OS: Linux 5.19; UI render: default; VCL: gtk3
Locale: de-DE (de_DE.UTF-8); UI: de-DE
Ubuntu package version: 4:7.5.3~rc2-0ubuntu0.22.04.1~lo1
Calc: threaded
Comment 1 Stéphane Guillou (stragu) 2023-05-31 21:10:27 UTC 
Thanks Felix.
I can confirm the issue in:

Version: 7.6.0.0.alpha1+ (X86_64) / LibreOffice Community
Build ID: fc4f7db59152f606b6aa88cf32197700959d0f8b
CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: gtk3
Locale: en-AU (en_AU.UTF-8); UI: en-US
Calc: threaded

This started in in 4.1.0.0.beta1 (tested with linux-64-releases bibisect repository).
Comment 2 m_a_riosv 2023-05-31 21:20:11 UTC 
Reproducible
Version: 7.6.0.0.alpha1+ (X86_64) / LibreOffice Community
Build ID: 60e499147963e42ce783dffcf9c8d4aba8b5d475
CPU threads: 16; OS: Windows 10.0 Build 22621; UI render: Skia/Raster; VCL: win
Locale: es-ES (es_ES); UI: en-US Calc: CL threaded

Setting up the font color, text is visible, but not with font color 'Automatic'