Steps to reproduce:

1. Open Administration -> General -> Images (Icons or background)
2. Add one or several images (in a same row) with name's length ~ 45 characters or more, or increase the name's length of existing icon to a maximum value
3. Locate the added/updated image in the image grid

Result:
Image names might overlap, if several images have longer name length
See screenshot...

Expected:
Names shouldn't overlap, in cases of longer name - text should be placed in several rows.