Unity player logo screen blinking

Hello!

Some time ago, we had a html page with our unity3d project on it, and all this was in a windows iis server. For testing the iis configuration, we access that page and had a blank page because the MIME Type was not properly configured. Later, with the MIME Type working, that project and every other unity project started to have the player loading page (that white one with the Unity logo on center and a progress bar) blinking while loading! And until now, every laoding Unity project start with the loading Unity page blinking!

Is there a whay to fix that?

I noticed that happening only on Mac machines.

Thank you!

Higor