macro autocomplete doesn't support scandinavian characters

It's not possible to create a panel/code etc block using wiki-markup in the new editor if the title contains international characters:

1. Writing the following doesn't work:

    {panel:title=Lue lisää}
   

   1. Will produce the following plain text on the wiki page:

       {panel:title=Lue lisää}
      

2. This works

    {panel:title=See more}
   

   1. Will produce a correctly formatted panel:

       {panel:title=See more}
        
       {panel}
      

• The same thing is reproducable using the code macro.
• International characters work if one edits the panel using the popup
• Also see attached screenshot (scands-fail-in-title.png)

Steps to Reproduce

1. Edit a page and type {panel: title=Title}
   • When you type the } character, the text is autoconverted into a Panel
2. Edit a page and type {panel: title=ä}
   • When you type the } character, nothing happens.
   • Expected result - the text would be autoconverted into a Panel

Workaround

Type {panel} to create the Panel, then Edit the properties of the Panel to enter the title