I doubt that it's caused by nginx. Try using another browser, does it happen?

yes, in every browser
first I think its from something from my joomla site, then I installed wordpress in subfolder and same thing
I'm using cloudflare, think maybe its from cdn, contact them but they said it's not, paused cloudflare and same thing. So if it's not nginx I don't know where to look anymore :(

Thank you Kamal

I found what is causing.
Addthis plugin :)

Glad it's working properly now :]