#434

frontend/src/components/counts/CountsAxes.tsx

@@ -35,9 +35,13 @@ const CountsAxes = ({ params, update }: {
   }
   const commit = (next: Record<string, string[]>) => {
     for (const group of ['rows', 'cols'] as const)
-      update (group, encodeCountState (group, next[group].map (field => axes.find (
-          axis => axis.field === field) ?? { field,
-          ...(countsFilterFields (definition)[field] === 'datetime' ? { grain: 'month' } : { }) })))
+    {
+      if (next[group].join (' ') === groups[group].join (' ')) continue
+      const selected = next[group].map (field => axes.find (axis => axis.field === field)
+	  ?? { field, ...(countsFilterFields (definition)[field] === 'datetime'
+	      ? { grain: 'month' } : { }) })
+      update (group, encodeCountState (group, selected))
+    }
   }
   const place = (id: string, target?: 'rows' | 'cols') => {
     const next = Object.fromEntries (Object.entries (groups).map (([key, ids]) => [