Guvnor should not reload jBPM Designer after each save. This can be applied to all editors. Especially in Designer its palettes are after each save closed and you have to open them again. This bug is based on the bug https://bugzilla.redhat.com/show_bug.cgi?id=854706, which was related with the Designer and closed, but this one is issue of the Guvnor.
Toni Rikkola <toni> updated the status of jira GUVNOR-1934 to Closed