https://bugs.documentfoundation.org/show_bug.cgi?id=170134
Bug ID: 170134
Summary: Libre Office dark theme: “Thickness” dropdown for
lines/shapes has white background and invisible items
Product: LibreOffice
Version: 25.8.4.2 release
Hardware: All
OS: Linux (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: LibreOffice
Assignee: [email protected]
Reporter: [email protected]
Description:
When using LibreOffice on Linux Mint with a dark system theme, the “Thickness”
dropdown in the sidebar (for lines and shapes) displays a white background, and
all the line previews are white or barely visible. As a result, it's impossible
to see the thickness options in the list — it looks blank. This issue only
occurs with dark themes; using a light theme restores normal visibility.
Steps to Reproduce:
1.Set Linux Mint (Cinnamon) to use a dark system theme.
2.Launch LibreOffice (Writer, Draw, or Impress).
3.Insert a shape or a line.
4.Open the Sidebar and select the Properties panel.
5.Click on the Thickness dropdown list under line properties.
Actual Results:
The dropdown has a white background.
Line previews are rendered in white, making them invisible or nearly invisible
against the background.
The list appears empty, even though thickness options exist.
Switching back to a light theme restores proper rendering.
Expected Results:
The “Thickness” dropdown should adapt properly to the dark theme.
The background and line previews should have sufficient contrast, making all
thickness options clearly visible.
Reproducible: Always
User Profile Reset: Yes
Additional Info:
Both LibreOffice and the system use dark appearance settings.
Changing the icon set or LibreOffice color scheme does not fix the issue.
Attaching a screenshot showing:
A shape/line in the document.
The open “Thickness” dropdown in the sidebar where previews are invisible on a
white background.
--------------------------------------------------------------------------
Version: 25.8.4.2 (X86_64) / LibreOffice Community
Build ID: 580(Build:2)
CPU threads: 16; OS: Linux 6.14; UI render: default; VCL: gtk3
Locale: el-GR (en_US.UTF-8); UI: en-US
Ubuntu package version: 4:25.8.4~rc2-0ubuntu0.24.04.1~lo1
Calc: threaded
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