Dialog (iOS, Safari) wrong alignment when tab bar is collapsed

[domidomi]

Dialog on Safari (iOS) is not sticking to the bottom of the screen when tab bar (address bar) is collapsed. URL: https://brainly.test/textbook-solutions/q-solve-following-equation-x-2-7. This issue is caused by applying position: fixed; on the body, which is responsible for ensuring, that content beneath the dialog won't scroll. Without position: fixed; on the body, the dialog sticks to the bottom of the screen perfectly and the page doesn't scroll, but there's a page bounce present.

https://user-images.githubusercontent.com/12099980/154043034-d0dd4ca9-c7f7-40c6-8346-1e6c71ea1e8d.mov