Like I mentioned in my thread here: Running multiple instances of ImageJ I cannot run multiple instances of ImageJ, it detects the running instance and does not open a new regardless of the setting in Options -> Misc.
The problem started to occur quite recently and I think I narrowed it down to the Java 8 update sites. If I download Fiji, I can’t run multiple instances. If I disable the Java8 update sites, however, I can open multiple instances.
I notice that someone already have had this problem here: Running multiple instances of ImageJ simultaneously on Windows OSs
Is this a bug, or how can I resolve it? I use multiple instances for plugins where multi-threading is not utilized and therefore takes many hours to run.
EDIT: OS is windows 10.