Still no sign of
#Shenandoah in jetbrains runtime, nor it ships yet with a JDK 15, but 2021.1 uses a DCEVM (like the Trava JDK), what are you up to ?
java --version
…
Dynamic Code Evolution 64-Bit Server VM JBR-11.0.9.1.11-1257.1-dcevm (build 11.0.9.1 11-b1257.1, mixed mode)