[5.2] Terrible performance spike causing by Font cache

[Unity 5.2.3p2 seems to fix the problem, thanks Unity !]

Hi again, I'm continue to port my project in Unity 5.2

I notice a terrible game freeze when open my UIs, due to "Font.CacheFontForText", which taking 3273ms (!), vs nothing in Unity 5.1.3. My UI doesn't contain a ton of text so... What's going on ? Does something change about using Text on UI in term of best pratices ?