Bug 280483. "A handler conflict occurred. This may disable some commands." warning on restart
Bug 285284. Removing comment end tag and adding it back leaves validation errors
Bug 289464. IExecutionDelegate should be using ISafeRunnable
Bug 290322. [reconciling] DirtyRegionProcessor cancels and schedules a Job for every keystroke
Bug 292088. DirtyRegionProcessor Job may not be canceled when the editor closes
Bug 299820. [validation] NPE in DelegatingSourceValidator#validate