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Sometimes "Internal Tomcat" node becomes unusual and shown just as "server" instead of "Internal Tomcat (JWSDP 1.0_01 [Not Running])". Sometimes it contains two localhost:8081 instances. After restart(without removing userdir) this problem usually disappear. Unfortunately there is not exact way to reproduce it. Please see attached 1.jpg and 2a.jpg for details. Reproduced with S1S 5 RC2 build.
Created attachment 10292 [details] Window with defect
Created attachment 10293 [details] Duplicate entries
I guess, this might happen when playing with module installation/uninstallation. Nevertheless, the additional information would be useful.
It seems that except of some UI defects this doesn't cause the functional issues.
Tomcat4 plugin was replaced by Tomcat5 plugin. This issue isn't relevant to new plugin. There is a different implementation of server instances in new server API.