Laravel Mix calling Recalculate Style

Hi All,

I've got a strange issue where Recalculate Style is being called by something that Laravel mix does.

If I remove Mix and manually load all my JS my site loads perfectly however with Mix injecting Bootstrap, Jquery and Laravels other dependences about 700ms into a 1800ms load Recalculate Style is called which creates pop in where styled elements become unstyled and then become restyled again.

Has anyone ever encountered this before? Chrome isn't giving me a stack trace to point me to the function causing the problem.

Thanks, Dave