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.

Screen.Recording.2022-01-27.at.15.31.54.mov