I am facing this issue. I have created a repeating grid layout in a section now I need to edit the layout to add a sorting option in the operations tab of the layout. But I am not able to open the properties panel of the repeat grid. Also the gear icon is missing. The repeat grid has a page list as a source. PFB the design in the attached document.
Please try to do a private edit of the rule and see if the new compilation resolves the issue. You could also try to do a private edit of pzAssemblePreprocess and save which should cause all sections to be recompiled this can had delays to processing so probably only appropriate in a development situation.