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Re-enabling theming requires two restarts instead of one

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#4,503 1 comentario 0 reacciones 0 asignados Ver en GitHub

Los mantenedores suelen responder en 1 día

@nburnwal09 ya está trabajando en esto.

Desde el 16/10/2026.

Evaluación

Dificultad
3/5
Tiempo estimado
1-2 días
Aptitud para principiantes
54/100
Tipo de issue
Error
Claridad
Bastante claro
Estado de actividad
Activo
Stack tecnológico
java
Área
desktop

Línea de trabajo

Start by tracing the Appearance preferences flow that saves the Enable Theming setting and restores the selected theme after restart; the issue names no files or tests. Reproduce the disable, restart, re-enable, restart sequence in a clean workspace, then inspect the preference and startup paths involved. Done means the previously selected theme is applied after the first restart when theming is re-enabled.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

bug

After disabling theming and restarting, if the user re-checks Enable Theming and clicks Apply, Eclipse restarts. After that restart theming is active but no theme has been selected or applied. The user must open Preferences a second time, pick a theme, and restart again. Two restarts are required to get back to a themed state.

Steps to reproduce

From a fresh installation and clean workspace:

  1. Open Window → Preferences → General → Appearance with theming enabled.
  2. Uncheck Enable Theming, click Apply, and restart when prompted.
  3. After restart, open Window → Preferences → General → Appearance.
  4. Re-check Enable Theming, click Apply, and restart when prompted.
  5. Current Beha: Eclipse starts with theming on but no theme applied — the workbench has no CSS styling. User must open Preferences again, select a theme, and restart a third time.
  6. Expected: After step 4's restart, Eclipse starts with theming on and a theme already applied — one restart total.

Follow up to Issue: https://github.com/eclipse-platform/eclipse.platform.ui/issues/4502

Tested under this environment:

Eclipse SDK
Version: 2026-12 (4.42)
Build id: I20261015-2300
OS: Mac OS X, v.27.0.1, aarch64 / cocoa
Java vendor: IBM Corporation
Java runtime version: 26.0.1+8

Lenguaje dominante
Java
Estrellas
124
Forks
269
Merge medio
2 d 11 h
PR fusionados (30 d)
72

Preparar el entorno

Primeros pasos

  1. Lee el issue completo y luego la guía de contribución del proyecto.
  2. Comenta en el issue que vas a ocuparte — evita que dos personas hagan lo mismo.
  3. Haz un fork del repositorio y trabaja en una rama.
  4. Abre un pull request que haga referencia al número del issue.

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