call Fx.init in after marginPushers step

- to make sure that subplot nodes have the correct
  mouse / click handlers.

Author: etpinard

src/plot_api/plot_api.js

@@ -196,12 +196,16 @@ Plotly.plot = function(gd, data, layout, config) {
         return Plots.previousPromises(gd);
     }
 
+    // in case the margins changed, draw margin pushers again
     function marginPushersAgain() {
-        // in case the margins changed, draw margin pushers again
         var seq = JSON.stringify(fullLayout._size) === oldmargins ?
             [] :
             [marginPushers, subroutines.layoutStyles];
 
+        // re-initialize cartesian interaction,
+        // which are sometimes cleared during marginPushers
+        seq = seq.concat(Fx.init);
+
         return Lib.syncOrAsync(seq, gd);
     }
 

test/jasmine/tests/hover_label_test.js

@@ -8,6 +8,7 @@ var Lib = require('@src/lib');
 var createGraphDiv = require('../assets/create_graph_div');
 var destroyGraphDiv = require('../assets/destroy_graph_div');
 var mouseEvent = require('../assets/mouse_event');
+var click = require('../assets/click');
 var doubleClick = require('../assets/double_click');
 
 describe('hover info', function() {
@@ -630,6 +631,16 @@ describe('hover after resizing', function() {
 
     afterEach(destroyGraphDiv);
 
+    function _click(pos) {
+        return new Promise(function(resolve) {
+            click(pos[0], pos[1]);
+
+            setTimeout(function() {
+                resolve();
+            }, constants.HOVERMINTIME);
+        });
+    }
+
     function assertLabelCount(pos, cnt, msg) {
         return new Promise(function(resolve) {
             mouseEvent('mousemove', pos[0], pos[1]);
@@ -652,6 +663,12 @@ describe('hover after resizing', function() {
             pos1 = [401, 122];
 
         Plotly.plot(gd, data, layout).then(function() {
+
+            // to test https://github.com/plotly/plotly.js/issues/1044
+
+            return _click(pos0);
+        })
+        .then(function() {
             return assertLabelCount(pos0, 1, 'before resize, showing pt label');
         })
         .then(function() {