--- Comment #8 from Alex Dupre <[hidden email]> ---
I've accidentally seen this bug report only now.
The reason of the segmentation fault is the sbt native code that breaks with
the FreeBSD 12 ABI change.
I've fixed the issue in the sbt port and the fix is also submitted upstream and
will be available in sbt 1.3, but the workaround for intellij+sbt1.2 is to add
"-Dsbt.io.jdktimestamps=true" to the VM Parameters of the SBT settings.