Two fiddles:
10 rows
https://fiddle.sencha.com/fiddle/1b97/preview
75 rows
https://fiddle.sencha.com/fiddle/1b98/preview
When previewed in chrome using modern toolkit, the list in the 10 row fiddle is fixed, it can't be scrolled.
The 75 row list is scrollable though.
Why is this important? I'd like to use the pull to refresh plugin and allow a list with one or two rows to be loaded. If the list doesn't scroll though, the plugin can't activate.
Any ideas? This used to work in touch, but not in Ext JS 6.
Screenshot 2016-05-31 10.29.58(2).png