I'm having an issue with CellMeasurer in conjunction with scrollToIndex on a List. If I set scrollToIndex to some large value (presumably any index corresponding to a row preceded by rows that haven't been measured yet), and then I scroll upwards, the scroll seems to reset back to it's original position repeatedly. Eventually it starts resetting higher and higher up, until eventually I've made my way back to the start of the list.
Relevant Plunker--it's a list with 300 elements (all the same static height so CellMeasurer isn't necessary but it illustrates my problem), and I set scrollToIndex to 150. Try scrolling upward.
https://plnkr.co/edit/XPF5D88WI9CErhkmrgAy?p=preview
Understandably the scroll might not be perfectly smooth since the calculations are based on predicted heights and they're not always going to be correct (in practice at least--in this case they will be correct), but this seems particularly bad/unintended. I suspect (and hope) that I'm doing something incorrectly here--would appreciate any thoughts. Thanks.
EDIT:
On my MBP this happens in both Chrome and Firefox, though it looks slightly different depending on which browser I'm using. On Windows, using Chrome, there is some weird flashing of different rows while scrolling up, but it doesn't seem to reset back to 150 at least.
EDIT:
Here's a gif of the issue occurring - this is on Chrome 60.0.3112.113, Mac OS Sierra 10.12.6:
Seems to be a bug, filed here: https://github.com/bvaughn/react-virtualized/issues/803.