Just downloaded the latest Swift Playground for Mac (4.6). The Welcome window does not let you scroll horizontally via mouse, trackpad, or other means, so you can only see the first two Learn to Code resources - similar for the App Gallery and Extend Your App sections.
Latest Swift Playground for Mac does not let you scroll horizontally
Hi there! We're currently unable to reproduce this with a trackpad—horizontal scrolling is working as expected. Can you please file a report with Feedback Assistant and include a sysdiagnose and the type of mouse or trackpad you're using?