TYPO3 Core

quick fix - workaround (V 4.2.1)

by changing the underlying table - enlarging the columns the icons will be put into one line.
to do this, change in typo3/stylesheet.css (make a copy before) the entries starting at line 1798 as follows

+++++++
table.typo3-dblist tr td.col-icon {
width: 20px; /*+++ KL 2008-06-15 */
}

table.typo3-dblist tr td.col-icon a {
width: 20px; /*+++ KL 2008-06-15 */
display: block;
}

table.typo3-dblist tr td.col-title {
width: 200px; /*+++ KL 2008-06-15 */
overflow: hidden;
}

table.typo3-dblist tr.c-headLine td.col-title a {
width: 200px;
display: block;
font-weight: bold;
}

table.typo3-dblist tr td.col-control {
width: 300px; /*+++ KL 2008-06-15 */
text-align: left;
}

table.typo3-dblist tr td.col-control-space {
width: 4px;
}

table.typo3-dblist tr.c-headLine td.col-control a{
width: 300px; /*+++ KL 2008-06-15 */
display: block;
}
-------------

Resolved as duplicate of #19650 which is currently pending in core list. Please test.