Heading bug on profiles

Question

I have found a bug. When we make heading like #Hello, visible as:

Hello

on our profile description, if the text is long then it is going outside its boundry.

It is shown here:

And it is also shown in profile page when saved:

And, the page is scroll-able:

In order to reproduce the bug, you can test and edit your profile. Also visit mine to see the scroll-able page.