To reproduce:
1. Open the project I attached (it's more ready-to-test than the user's)
2. Open the scene
3. Click on main camera
4. Enter a "Size" of more than 1
5. Copy a piece of text that includes a new line symbol
6. Paste the text into "Name" input field
7. Notice that the text overlaps inspector's text

The same happens with every first input field of every list's element.

------

Try pasting it in the second input field and select the text (so it becomes highlighted), notice that the selection is buggy (too big) though the text do not overlap.