The common_test-1.11.2 application can be applied independently of other applications on a full OTP 18 installation.
If a ssh package contained more than one netconf end tag, then the second end tag was never detected in ct_netconfc:handle_data. Instead it was included in the XML data given to the xmerl parser, which then failed. The problem was introduced by OTP-13007, and has now been corrected.
Full runtime dependencies of common_test-1.11.2: compiler-6.0, crypto-3.6, debugger-4.1, erts-7.0, inets-6.0, kernel-4.0, observer-2.1, runtime_tools-1.8.16, sasl-2.4.2, snmp-5.1.2, ssh-4.0, stdlib-2.5, test_server-3.9, tools-2.8, xmerl-1.3.8