input: The cursor doesn't scroll together with the input on mobile

[nadia318]

Actual Behavior:

• What is the issue? * The cursor doesn't scroll together with the input on mobile
• What is the expected behavior? Cursor should be inside textarea or input

CodePen (or steps to reproduce the issue): *

• Details:
  Set focus on input or textarea, start scrolling the page (not letting go of the screen).The cursor doesn't scroll together with the input on mobile
  my site - https://monosnap.com/file/656ypDqz8x9H6KrMfkSKgucUV8oZX0
  angular material site - https://monosnap.com/file/9SmmmQkl6NIcEpISwlmCvR59HlEvuI

AngularJS Versions: *

• AngularJS Version: 1.6.6
• AngularJS Material Version:1.1.4

Additional Information:

• Browser Type: *Safari mobile
• Browser Version: * Safari mobile
• OS: *11.1
• Stack Traces: