Yes, there is a way to configure this in the new OpenWorkdesk 3.2 release. We introduced a new node in the owbootstrap.xml that is named "DefaultStringMaxSize" => the default value is 32 and you can change it to any value.
….
<ClassName>com.wewebu.ow.server.app.OwStandardFieldManager</ClassName>
<Version>3.2.0</Version>
<TextAreaThreshold>255</TextAreaThreshold>
<DefaultStringMaxSize>32</DefaultStringMaxSize>
….