Vaclav said:

Just an update on unresolved bundles. I looked at rh-eclipse46-devstudio-10.2-0.20161103.0650.el7.x86_64.rpm and the only ones are:
ch.qos.logback.slf4j
org.slf4j.impl.log4j12

Both of those bundles declare

Fragment-Host: org.slf4j.api;bundle-version="[1.7.2,1.7.3)"

And since we're now using slf4j.api_1.7.4.jar, which has in its MANIFEST.MF:

Export-Package: org.slf4j;version=1.7.4, org.slf4j.spi;version=1.7.4, 
 org.slf4j.helpers;version=1.7.4
Import-Package: org.slf4j.impl;version=1.6.0;resolution:=optional
Bundle-SymbolicName: slf4j.api

I suspect we need to find newer versions of those that can use slf4j 1.7.4 instead of 1.7.2.