Cannot clear text of input field in the editor (not at runtime)

Questions & Answers
1

I’m in Unity 2020.3.3f1. I created an input field and changed the text of the placeholder, and stupidly the text of the text field as well. When I try to remove all text from input field’s text (TMPro) item now, the Editor imediately inserts the text from the placeholder. Strangely enough for the 1. Text field it now works after I press play and the placeholder is shown in italic, but for the second it doesn’t. I tried duplicating the input field, and it doesn’t work.
When I create a new input field, it behaves as expected.

2

OK, found it. I have to change the text in the parent (Text Mesh Pro - Input Field) and not touch the Text component.