The good thing about Electron apps is they all usually accept ctrl+shift+plus to quickly zoom in the whole application, not just the text. Just like zooming any page in the browser.
The bad thing is it applies to all windows of that app, so you can't mix big and small vscode if put one window on laptop HD screen and one window on 4k external monitor.
The bad thing is it applies to all windows of that app, so you can't mix big and small vscode if put one window on laptop HD screen and one window on 4k external monitor.