Unfortunately, impossible to access:
jAlbum > Preferences > General > Look and feel
Because not available from the top menu.
So I remove the following into "defaults.jap": com.bulenkov.darcula.DarculaLaf
Check the line again and if it is still as above replace it with
I expect that we will see a patch/fix from Apple or Oracle within days. You who have this problem, please try the plain v14 installation here: http://jalbum.net/en/software/download/previous/version/14 and report if it works on High Sierra. If it works, then I'll provide a temporary 14.1 release that runs on the same working Java version (Java 8 u121)
I've made a quick fix that moves the menu to the window no matter what look and feel you're using. To apply the fix, get http://jalbum.net/download/14.1/jalbum-core.jar and put it inside jAlbum's "lib" folder, thereby REPLACING the existing jalbum-core.jar file. Now restart jAlbum.
Please report this problem to Apple. It's a problem affecting MANY Java apps.
I don't have High Sierra yet, so I haven't seen the problem (and I might not, as it seems to affect only systems whose language is set to something other than English), but that core update doesn't seem to have made any visible difference. The menu items are still not part of the application window. Or am I simply misunderstanding what should happen?