URL: https://material.io/design/

Browser / Version: Firefox Mobile 62.0
Operating System: Android 7.0
Tested Another Browser: Yes

Problem type: Design is broken
Description: Menu items are poorly rendered
Steps to Reproduce:

1. Visit the site
2. Tap on the menu button
3. Scroll down the menu panel

When scrolled, the menu items behave badly as shown in the screenshot below.

This issue does not occur in Chrome 66, Android 7.0. However, this issue may spread out to more websites using Material Design Components for Web.

From webcompat.com with ❤️