Yesterday I add to my Fiji jars folder a plugin developed by @haesleinhuepf.
Today I downloaded an updated version of it and two versions of the same jar file were simultaneously present at my computer: imagejmacromarkdown_-0.1.0.jar and imagejmacromarkdown_-0.2.0.jar.
When run help > Update… it detected both versions and asked me if I wanted to ignore or to delete.
I selected delete but to my surprise, it deleted the newer version.
So, Fiji developers, is there anything that justifies this behavior or it is a Fiji bug?