Bug 521182 - [compiler] method reference on null object should throw NPE at runtime (JLS compliance)
Bug 534597 - Unanticipated comparator errors in I20180511-2000
Bug 567095 - Comparator errors in I20200917-1800
Bug 572892 - 4.20 I-Build: I20210415-1800 - Comparator Errors Found
#383: Eclipse 4.26.0 Integration Build: I20221106-2230 Unstable! 
https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/issues/1184
https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/issues/1781
https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/issues/1923
https://github.com/eclipse-platform/eclipse.platform.releng.aggregator/issues/1979