Bug 150272

Summary: Impress tables with no borders show unexpected gaps between cells
Product: LibreOffice Reporter: Rafael Lima <rafael.palma.lima>
Component: ImpressAssignee: Not Assigned <libreoffice-bugs>
Status: NEW ---    
Severity: normal CC: nnamani.ezinne
Priority: medium    
Version: 7.3.5.2 release   
Hardware: All   
OS: All   
Whiteboard:
Crash report or crash signature: Regression By:
Bug Depends on:    
Bug Blocks: 100366    
Attachments: Sample ODP with table
Screenshot showing the problem
PDF exported from sample ODP file

Description Rafael Lima 2022-08-04 19:47:25 UTC 
Created attachment 181614 [details]
Sample ODP with table

In Impress if you create a table with background color and no borders, gaps will be displayed where the borders would be placed. These unexpected gaps are actually visual glitches that need to be fixed.

These gaps are visible during presentation. However, in the exported PDF the table is rendered correctly, without gaps.

See attached ODP with a sample file.

Steps to reproduce:
1) Create a new presentation and insert a 5x5 table
2) Select all cells; right-click and go to Table Properties - Borders
3) Select Line Style "None" and click the "No Borders" preset
4) Now go to the Background tab and choose Black as the background color
5) Click OK and notice that the table has gaps between cells

The expected outcome would be to have a plain black table with no gaps between cells.

System info

Version: 7.3.5.2 / LibreOffice Community
Build ID: 30(Build:2)
CPU threads: 16; OS: Linux 5.15; UI render: default; VCL: kf5 (cairo+xcb)
Locale: pt-BR (pt_BR.UTF-8); UI: en-US
Ubuntu package version: 1:7.3.5-0ubuntu0.22.04.1
Calc: threaded

Also repro in

Version: 7.5.0.0.alpha0+ / LibreOffice Community
Build ID: c2e86396b741b956efc05e9dfea1e1c3286dfb9d
CPU threads: 16; OS: Linux 5.15; UI render: default; VCL: kf5 (cairo+xcb)
Locale: pt-BR (pt_BR.UTF-8); UI: en-US
Calc: threaded
Comment 1 Rafael Lima 2022-08-04 19:48:32 UTC 
Created attachment 181615 [details]
Screenshot showing the problem

This is a screenshot of what I'm seeing on my screen.
Comment 2 Rafael Lima 2022-08-04 19:49:27 UTC 
Created attachment 181616 [details]
PDF exported from sample ODP file

Notice that the exported PDF does not have these glitches.
Comment 3 Rafael Lima 2022-08-04 19:51:13 UTC 
UPDATE

Actually the PDF does have the glitch, depending on the PDF viewer you use.

In Okular the problem is not visible, but in Firefox you still can see the border glitch.
Comment 4 Ezinne 2022-08-07 20:13:35 UTC 
Reproducible in:

Version: 7.5.0.0.alpha0+ / LibreOffice Community
Build ID: 36994c19fdbf425108f685de21464496bd93b651
CPU threads: 4; OS: Linux 5.15; UI render: default; VCL: gtk3
Locale: en-NG (en_NG); UI: en-US
Calc: threaded