In Nautilus class definition pane, if it shows a class definition like Object subclass: #RBNamespace instanceVariableNames: 'changes environment newClasses removedClasses changedClasses rootClasses implementorsCache sendersCache' classVariableNames: '' package: 'Refactoring-Core-Model' you can select an inst var and use cmd+shift+n to browse all accesses to this var. I broke this behavior. ( But I find it useful and a I want it back). The problem, Rubric needs to know the current selected class (it calls classOrMetaclass on the *interaction model* (Nautilus) to find the class it searches for this inst var. But the same method #classOrMetaclass is called by NEC, and if NEC finds a class it trys to parse the current text as a method definition, but this panes contains a class definition, not a method definition, and this yields to the strange completions (case 16712) this is what I tried to fix when I broke this browseAllAccessesTo behavior. Any Idea how we can get both ? - Rubric to find the correct class for browsing inst var access - NEC to find *no class* so it does not try to complete the inst var names. I don't know how to solve this, I don't understand how rubric delegates this calls (it should be possible to call #selectedBehavior or #selectedClass but it uses some delegates rub editing -> rub editor -> rub scrolled text model -> interaction model -> nautilus ui