Demo link or sample code: [Enter the URL pointing to a simple demo which clearly reproduces the bug, or insert code snippet]

What steps will reproduce the problem? 1. Add about 500 markers in a loop. 2. Immediately after the loop block, initiate the MarkerClusterer. 3. Click on a marker; it should appear properly. 4. Click on a second marker; it will bring up the location of the first marker. 5. Click on the second marker again; it will show the correct location after clicking on it again.

Expected result: Clicking on the second marker the first time should bring up the location of the second marker.

Actual result: It brings up the location of the first marker.

Version: 2.1.1

Browser / Operating System: Google Chrome 47 / Windows 7 32-bit

Additional comments: It appears when creating the marker cluster immediately after adding a lot of markers in a loop, the map sometimes has unpredicable behavior as described above.

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