https://de.wiktionary.org/wiki/Spezial:Einstellungen#mw-prefsection-editing now I marked the box ' Bearbeiten-Werkzeugleiste anzeigen' and now insert char works again.

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sorry, I did not notice that I sent all of it again :( It is the very first time I am engaged in this kind of kommunication. To javascript: I have javascript.enabled true ( in about:config) . I started firefox in safe mode and it did not affect my problem. When I edit in swedish wiktionary, it works. That makes me think it is my commons.js which starts the trouble and just here in my homewiki. But it was ok before roundabout last week.

when I move the cursor over the Ä because I want to select it for insert, it says: javascript:void() in the lefthand down corner of my screen

When '''I''' do it, right now, a second ago, it does not work! It is NOT inserted in the editing box. The cursor just dissappears from it´s place and nothing else happens. (When I do the same action as an IP-adress, the signs appear on the screen in the editing box just as you describe it!) Sorry, but it is that way. Can´t you imitate to be me, my wiki account? It must have something to do with my account.

1. use my account2. go to https://de.wiktionary.org/w/index.php?title=Wiktionary:Schwedisch&action=edit3. try to insert character [[]] by selecting the insert/ Einfügen sign under the editing box4. it does not work

hi, thanks for answering.I use firefox 35.0.1 and windows  8.1go to https://de.wiktionary.org/w/index.php?title=Wiktionary:Schwedisch&action=editbe sure to use my accountabove the editing box you should select 'Textbausteine'
klick on {{IPA}} or any otheror klick on one of my buttons directly over the editing-box tex 'Subst-Tabelle'or klick on one of the strings under the editing box efter Einfügen:  tex [[]]neither will result in that a text is written inside the editing box where the cursor is waiting.All three used to produce the indicated text in the editing box. But not any longer.