custom titleBarStyle breaks mouse cursor in editor

[G-Ray]

• VSCode Version: v1.27.1
• OS Version: Fedora 28
• screen: 3200x1800px

Steps to Reproduce:

1. Set window.titleBarStyle="custom"
2. restart vscode in a window
3. The cursor mouse does not work everywhere in the editor.

Gif demonstrating the issue: https://i.imgur.com/vQi0iWV.gif

The issue does not happen when vs code is in fullscreen, or when titleBarStyle is set to "native".
The issue does not appear on another computer on Fedora 28 too, with a 1080p screen.

[sbatten]

@G-Ray can you reliably repro this with the custom title bar enabled? Is it possible to reproduce this with the native title bar?

[G-Ray]

@sbatten Here are some more info:

• I can repro this 100% when custom title bar is enabled + my gnome desktop display settings scale the display at 200%. As my laptop screen is 3200x1800, I always use a scaling setting of 200%. No issue when vscode is in fullscreen mode.

• No issue when scaling is set to 100%.

• when titlebar is native, I can't repro the issue, no matter what is the scaling percentage.

I guess when the style is native vscode uses gtk3, and there is no issues at all with the way gnome/gtk are scaling the app for hidpi screens. However when the titleBar is set to custom, gtk libs may not be loaded, and this causes this issue ?

[G-Ray]

@sbatten Any news ? Can you reproduce this behavior in a GNU/Linux distro ?

[sbatten]

@G-Ray thanks for the extra info, I was able to repro the issue in Electron as well and have reported upstream: electron/electron#14787

[joaomoreno]

This appears to be fixed on today's VS Code Insiders, which is based on Electron 6.0.9! 🎆

Can you confirm @sbatten?

[sbatten]

confirmed