Go to http://aemhost/crx/de/index.jsp and log in as admin
Touch ui dialog text field with sling:resourceType=granite/ui/components/coral/foundation/form/textfield incorrectly converts Latin characters. For example, "Eléctricos" gets saved as "Eléctricos".
This issue applies to many international language characters.
The default character encoding used by Sling is not UTF.
To force the dialog to save data in UTF character encoding, you can add a hidden element to the dialog form (solution A) or set default encoding to UTF-8 (solution B).
A. Add a hidden element to the dialog form
Go to http://aemhost/crx/de/index.jsp and log in as admin
Go to your dialog node, for example, /apps/sitename/components/content/customtext/cq:dialog/content/items/settings/items/columns/items/displayAs/items
Create a subnode charset with the following properties:
sling:resourceType (String) = granite/ui/components/coral/foundation/form/hidden ignoreData (Boolean) = true name (String) = _charset _value (String) = utf-8
Alternatively you can copy a similar node from the /libs directory. For example, this node /libs/cq/personalization/touch-ui/content/commons/createpagewizard/jcr:content/body/items/form/items/charset
Click Save All
B. Set the default character encoding to UTF-8
Go to http://aemhost/system/console/configMgr/org.apache.sling.engine.parameters and log in as admin
Set Default Parameter Encoding to UTF-8
Click Save