Thank you very much!
Solution for version 1.5.6: 1. Open the /skins/larry/mail.css file in a text editor.
2. Find line 1460. Comment out the line. The block should look like this:
.widescreen .messagelist td.subject {
width: 99%;
/*white-space: wrap;*/
position: relative; /* for span.date positioning in Firefox */
}
3. Save file.
4. Open the /skins/larry/mail.min.css file in a text editor.
5. Find the next code in the text:
{width:99%;white-space:wrap;position:relative}
6. Delete the "white-space:wrap;" in this code;
7. The code should look like this:
{width:99%;position:relative}
8. Save file.
9. Delete the files in the <roundcube>/temp folder,
except for the file .htaccess10. Restart apache.
11. Clear your browser cache on the client.
12. Use.
The fix will work for all skins except Classic.
To fix the "classic" skin, you need to do the same with the files classic/mail.css and classic/mail.min.css in the classic skin.