I created several extension fields today. Among others also with drop down menu. Unfortunately, the umlauts (ä, ü, ö) are not displayed correctly in the menu. The second problem is that the TDI that sends the information to the Active Directory also does not transmit correctly with umlauts.
What could be done, so that connections represent the umlauts both correctly and via TDI?
Actually, i am not sure if i can suggest any changes to you directly on commonUtil.ftl file at this point but If it is happening in RTE as well then it is surely a bug.
Well, I would suggest you to raise a case for this issue so that we could further investigate.
I'm curious, but when I understand it right, then you provide this "Mit freundlichen Grüßen" String in your customizations, or?
Can you test in a field with free text, if you can type and store german umlauts without issues?
Then have a look into the profiles strings files and check the strings there. All umlauts are written in entities, so you have to provide the strings with entity, then the user will see and write the UTF-8 characters to the database.
I would recommend the properties files, when you have multilingual users. So when you want to store the values in multiple languages, if you have only german speaking folks, you can keep it simple.
I mentioned ui_de.properties to have a look into the different character replacements, or you look at https://www.fileformat.info/info/unicode/char/00df/index.htm