This problem was reproduced in an Android 10 Samsung Galaxy A30s using Gboard or Samsung keyboard, Google Chrome and in more than one community.
When I want to add a link to the two initial rows of an answer, then this is what happens:
In other words, a tiny menu appears with functionalities that covers nearly all of the Q&A menu. The most common case for me is wanting to add a link in the first row and then not being able to do it right away. My workarounds are:
- Create extra paragraphs before the text, add the link and then remove the paragraphs.
- Click in the three dots that show up in the right side of that menu to shrink its size as the following two images show. (In this case it'd still cover some icons.)
This problem happens in questions too but only when the menu format doesn't have this extra row like in the following screenshot.