Install Darkest Dark plugin to Eclipse
Steps to reproduce the issue:
1. Open file in editor (java file)
2. Press CTRL+F To open the Find/Replace dialog
3. Type in search text and press enter
A text box with white background is displayed with ‘String not found’ when there are no matches found : https://gyazo.com/ccc1b400b8d3c0658d954cebfc9563a5
User also reports an empty box with no content : https://gyazo.com/03810b020e22943830afea01b4d70df1