Shenandoah GC crashes on forceEarlyReturn006

If you run test: vmTestbase/nsk/jdi/ThreadReference/forceEarlyReturn/forceEarlyReturn006/TestDescription.java
with -XX:+UseShenandoahGC, it crashes like:

# To suppress the following error report, specify this argument
# after -XX: or in .hotspotrc: SuppressErrorAt=/shenandoahSupport.cpp:1909
#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp:1909), pid=2585, tid=2599
# Error: assert(controls.member(u->in(0))) failed
#

To reproduce:

make test TEST=vmTestbase/nsk/jdi/ThreadReference/forceEarlyReturn/forceEarlyReturn006/TestDescription.java JTREG="VM_OPTIONS=-XX:+UseShenandoahGC"