sortable and input text

hi,
I have sortable list:
<ul id="sortable">
<li class="ui-state-default" id="item_new1">
<input type="text" id="item_value_new1"
name="item_value_new1">
</li>
</ul>
but in the input field I cannot select text with, neither with shift
+left(or right)..etc. this bug is only for FF and IE (chrome and opera
allows to select text )
has anybody the same problem?