# Translucent JCEF Window Bug for A Hosted Plugin

**URL:** <https://platform.jetbrains.com/t/translucent-jcef-window-bug-for-a-hosted-plugin/2865>\
**Category:** IntelliJ Platform\
**Tags:** jcef\
**Created:** [October 4, 2025, 8:38pm UTC](https://platform.jetbrains.com/t/translucent-jcef-window-bug-for-a-hosted-plugin/2865 "2025-10-04T20:38:32Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![adamhill](https://sea1.discourse-cdn.com/flex001/user_avatar/platform.jetbrains.com/adamhill/32/1868_2.png) [@adamhill](https://platform.jetbrains.com/u/adamhill)\
**Post date:** [October 4, 2025, 8:38pm UTC](https://platform.jetbrains.com/t/translucent-jcef-window-bug-for-a-hosted-plugin/2865/1 "2025-10-04T20:38:32Z")

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We have a user reporting a translucent background showing content behind it with our plugin.It is a Visual Studio Code Extension running in a Plugin. We cannot repro this on physical or virtual machines. I personally tested this plugin under macOS and WIndows, all 12 IDE’s and I have never seen this. They claim not to have any Windowing modification tools running.

IDEA 2025.2.2 worked fine, upgrading to 2025.2.3 caused it to become translucent.

(See attached image)

OS: WIndows 11  
IDE IDEA 2025.2.3  
JCEF: Runtime version: 21.0.8+1-b1038.72 amd64 (JCEF 122.1.9) VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.  
Plugin: Kilocode for Jetbrains - [https://plugins.jetbrains.com/plugin/28350-kilo-code](https://plugins.jetbrains.com/plugin/28350-kilo-code)  
Github: [GitHub - Kilo-Org/kilocode: Open Source AI coding assistant for planning, building, and fixing code. We frequently merge features from open-source projects while building our own vision. Follow us: kilocode.ai/social](https://github.com/Kilo-Org/kilocode)

Thanks for any cause suggestions or testing ideas.

 ![image](https://us1.discourse-cdn.com/flex001/uploads/jetbrains_platform/original/2X/9/91725c4c986c564c8a9eaae1f0ddbfa75326d333.png)