I need your code and the exact steps to reproduce the issue. I tried the code bellow in the demo db but didn't see any wrong behavior.
<?xml version="1.0" encoding="UTF-8"?>
<xp:view xmlns:xp="http://www.ibm.com/xsp/core"
xmlns:xe="http://www.ibm.com/xsp/coreex"
xmlns:xc="http://www.ibm.com/xsp/custom" enableModifiedFlag="true">
1: <xp:inputText id="inputText1"></xp:inputText>
<br/>
2:<xp:inputText id="inputText5"></xp:inputText>
<xe:valuePicker id="valuePicker5" for="inputText5">
<xe:this.dataProvider>
<xe:simpleValuePicker>
<xe:this.valueList><![CDATA[a
b
c
d
e
f]]></xe:this.valueList>
</xe:simpleValuePicker>
</xe:this.dataProvider>
</xe:valuePicker>
</xp:view>