Description
Bug, feature request, or proposal:
When you have a small view port, the default position strategy is to keep the upper side of the calendar visible on the screen (maybe the bottom part is hidden, and that's ok). But when you resize the viewport in order to see the entire calendar, two things happen:
1 - The revealed bottom part is transparent
2 - The calendar jumps down to a position out of sight in the viewport (it seems like the logic inside is trying to push it to a supposed correct position that it would be if the viewport wasn't small in the first place - it's miscalculated)
It seems to be a bug with the overlay itself.
What is the expected behavior?
Not happen what's described above
What is the current behavior?
Described above
What are the steps to reproduce?
I tested it on https://beta-angular-material-io.firebaseapp.com/components/datepicker/overview
What is the use-case or motivation for changing an existing behavior?
It's a bug
Which versions of Angular, Material, OS, TypeScript, browsers are affected?
Material 7.0.0-rc.1
Is there anything else we should know?
Introduced in #11607 when the position strategy was switched to onPush(true) and withLockedPosition()