When creating/editing custom rewards, there is a nice textarea form field to enter a description. This textarea allows for multiline descriptions. However, in the browser line breaks are not preserved, and so description isn't shown as expected. This could be easily fixed using a CSS property such as white-space: break-spaces

Bug reproduced in both Chrome and Firefox browsers. Twitch mobile app does format description properly

Bug screenshot for reference: https://imgur.com/a/jQo4gDB