tooltip reposition doesn't work inside blocks with overflow: auto

[fxck]

http://plnkr.co/edit/LauQvv8yTMAONAvK2JJx?p=preview

this includes <md-dialog-content> for example

I think I read about some sort of helper directive you'd stick onto the overflow: auto element to deal with this, but honestly this "reposition" strategy doesn't feel right anyway (even for small components like tooltip), it's jumping around (the slower computer you have the more it jumps).. could the tooltip just disappear when you scroll, just like it did material1 I believe?

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