Hello Seblod Comunity...
I updatet Joomla to 3.4.5, as suggested, because of the Security-Hole. I tought everything worked after a check, so i resumed the work on the new Joomla. After 2 Days of work i now realised, that the Image-Thumbs, do not load a Modal-Box anymore, when you click on it, the Picture will always display in a new Window.
I am a JCE User, and as such i am affected by the Problem, that the Color-Box height in the Backend is to small. So i modified (quick and dirty) the File:
media/cck/scripts/jquery-colorbox/css/colorbox.css
This gave me the correct height in the Backend. But i always make a Backup of the Original File. When i stumbled over the Problem above, i instinctively tought that it has something to do with the modification of "colorbox.css". So i removed the modification and put the Original-File there. The Box in Backend is now standard, but no Dice on the Frontend. Images always get loaded in a new Window. I am not really sure if that even has something to do with my Problem, but i tought it was notable.
Is this a Bug, that came up with the new Joomla and Seblod? On my old Backup, bevore the Update everything works as intended. I also have not modified any other things than my "override.css" and the "colorbox.css" as stated above. I even tried and removed the override.css alltogether, to see, if thats the culprit, even if its to me a silly idea.