Zoom control and streetview not showing on my Google map?

That is definitely a CSS issue that you have with your code. Look for CSS that is applying to all images like:

img {
  max-width: 100%;
}

I had this problem, the fix was to include this CSS ...

.gmnoprint img { max-width: none; }

The CSS selector .gmnoprint img gets to all images [img] on the Google Map [gm] controls that are non printing [noprint]. In my case max-width had been set globally to 100%. Unsetting this fixed the issue.