All is in the title (same for Find Fields) on the latest release (not 5.8)
The error :
acf-input.min.js?ver=5.7.10:1 Uncaught TypeError: t.parent.find is not a function
at Object.acf.findFields (acf-input.min.js?ver=5.7.10:1)
It works when parent set to false …
Thanks for fix or clarification
Christian