The current location button does not work on ios googlemaps api.Have you changed the specifications?

After compiling the previously running app with the new xcode and sdk,
The current location button on the map displayed in googlemaps api is no longer working.
Are there any changes to the specifications?

The current location button is displayed in objective-c using the following code:

mapView_.settings.myLocationButton=YES;

The version of googlemaps sdk is 2.7.0,
The xcode version is 9.3.1.

The current location button is working in the google map app.

Also, in the application, the screen transition between the table views is very slow, although the screen transition between the UITableView→UITableView→ maps is performed.
Please let me know if you know any reason that you can think of.

Thank you for your cooperation.