После сегодняшнего обновления до java-1.8.0-openjdk-javaws-1.8-alt1_1jpp8.x86_64 такие ошибки в терминале:

=8<=============================================================================
/usr/bin/javaws /usr/bin/javaws.itweb   /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-5.b12.x86_64/jre/bin/java
/etc/alternatives/packages.d/java-1.8.0-openjdk-javaws errors:
slave alternative /usr/bin/javaws references unknown master candidate /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.151-5.b12.x86_64/jre/bin/java
=8<=============================================================================

и в результате:
=8<=============================================================================
$which javaws
javaws not found
zsh: exit 1
=8<=============================================================================

ссылки в /etc/alternatives/links нет.