Ionic 4 and google map not loading when page is re entered

Hi All

I am I got google maps working, but once i leave the page an re enter the maps is all greyed out till, i zoom in and out either using a mouse on crome or fingers on a mobile device.

I have seen many others with the same issue, but no clear solution.

Can someone help me solve this issue?

Hi, did you find a solution to this?