update description and some optimization

Author: archmoj

src/plots/cartesian/axes.js

@@ -3203,26 +3203,25 @@ axes.drawLabels = function(gd, ax, opts) {
         });
     }
 
-    if(!axisIds.isLinked(fullLayout, ax._id)) {
-        var anchorAx = ax._anchorAxis;
-        if(
-            anchorAx && anchorAx.autorange &&
-            (ax.ticklabelposition || '').indexOf('inside') !== -1
-        ) {
-            if(!fullLayout._insideTickLabelsAutorange) {
-                fullLayout._insideTickLabelsAutorange = {};
-            }
-            fullLayout._insideTickLabelsAutorange[anchorAx._name + '.autorange'] = anchorAx.autorange;
-
-            seq.push(
-                function computeFinalTickLabelBoundingBoxes() {
-                    tickLabels.each(function(d, i) {
-                        var thisLabel = selectTickLabel(this);
-                        ax._vals[i].bb = Drawing.bBox(thisLabel.node());
-                    });
-                }
-            );
+    var anchorAx = ax._anchorAxis;
+    if(
+        anchorAx && anchorAx.autorange &&
+        (ax.ticklabelposition || '').indexOf('inside') !== -1 &&
+        !axisIds.isLinked(fullLayout, ax._id)
+    ) {
+        if(!fullLayout._insideTickLabelsAutorange) {
+            fullLayout._insideTickLabelsAutorange = {};
         }
+        fullLayout._insideTickLabelsAutorange[anchorAx._name + '.autorange'] = anchorAx.autorange;
+
+        seq.push(
+            function computeFinalTickLabelBoundingBoxes() {
+                tickLabels.each(function(d, i) {
+                    var thisLabel = selectTickLabel(this);
+                    ax._vals[i].bb = Drawing.bBox(thisLabel.node());
+                });
+            }
+        );
     }
 
     var done = Lib.syncOrAsync(seq);

src/plots/cartesian/layout_attributes.js

@@ -525,7 +525,10 @@ module.exports = {
             'top or bottom has no effect on x axes or when `ticklabelmode` is set to *period*.',
             'Similarly',
             'left or right has no effect on y axes or when `ticklabelmode` is set to *period*.',
-            'Has no effect on *multicategory* axes or when `tickson` is set to *boundaries*.'
+            'Has no effect on *multicategory* axes or when `tickson` is set to *boundaries*.',
+            'When used on axes linked by `matches` or `scaleanchor`,',
+            'no extra padding for inside labels would be added by autorange,',
+            'so that the scales could match.'
         ].join(' ')
     },
     mirror: {