Preview of "save for web" over saturated

Hello everyone.

I'm having a problem lately that when exporting for web, the preview gets over saturated, but it exports well.

It's just the preview that is giving the problem. I open the file in any other place and looks well. I have reseted the settings and this "problem" continues. It's not really a problem but it's anoying. Has this happen to anyone? If so, have you solved it?