Strange behaviour on maps add marker on click event

[Yusuf Nugraha]

Hello guys,

It almost one year since I started to research about google maps api, but recently I found strange behaviour on event click to add a new marker to maps.

Sometime the marker won't show up, till I re-install Google Chrome and everything comes back to normal.

Do you guys know why? Is it malware or something that must be cleaned off?

P.S. : Sometime this problem fixed by itself

Thanks