| Hello Hans,
Welcome aboard. I'm replying just in case you don't get another reply. I have absolutely no idea what would cause it to act that way, but when things don't work the way they should, it is usually a good idea to delete the preferences file. When you start Photoshop again, it will be rebuilt, so it's not something to be afraid of doing.
I've also found that sometimes when things don't work properly, if I close Photoshop, then restart it, the problem disappears. Good luck.
Ed |