Torsten and me are facing the problem that after a certain time the Alt key stops working: navigating becomes a problem. Quitting and restarting CafeTran solves the problem.
We're both on Java 9 now and since then the problem started.
Maybe it has something to do with switching between the apps - using the same shortcuts across various editing software?
>using the same shortcuts across various editing software?
You mean the system standard ALT+RIGHT/LEFT?
This discussion seems to be old, but I've just had this problem for some time (using CafeTran Yeddi) so I came here. I was using Java 10.0.2 that I had downloaded from an Oracle page. I guess this was a JDK (Java Development Kit) which should only be used when you develop Java applications. Now I've removed it and installed a JRE (Java Runtime Environment) "Java 8 update 221" downloaded from java.com instead of Oracle. If you don't want to develop, but only use applications, this is what you should use. I have the impression that this fixed my problem. Besides that, surprise: CafeTran also runs noticeably faster now. (This may also be due to a cleanup of a Java cache that the uninstaller suggested me to run when I removed the existing version from my Mac. Not sure if that cache can be cleaned in a different way as well).