While trying to provide a reproducable example for you, i gather following detailed informations:
First, our app needs 6 bundles. 5 bundles are simple OSGI-Jars the sixth is an OSGI-WAR.
a) starting debug mode in jboss tools with one OSGI-Jar, i can hot deploy all OSGI-Bundles incl. OSGI-WAR one by one with "Add and Remove.."
b) i can publish all OSGI-Jars and then start the jboss with jboss tools in debug mode
c) if i publish the OSGI-WAR and then start the jboss with jboss tools in debug mode --> the exceptions above occur
So to reproduce this issue we'll need one OSGI-War and one dependent OSGI-Jar.