The batch resave option will only show in Rack view, not in Single view. Click VIEW in header to switch between.
This is not new in 7.8, it was changed in 7.7.
It didn’t remove batch resave altogether - it’s still available in Kontakt standalone
Not sure - it's there for me
Yes - yours looks like what I would expect to see for the plugin (or Player?), not the standalone app version - it's missing several other things that should be there in the full version like 'new instrument' and Lua scripting
That is very weird, not sure what is going on there. Are you definitely using the app version?
Wait, there is an app version of Kontakt?
Yes, Kontakt standalone
OK yeah best to contact support or we can ask one of the Kontakt specialists here eg @EvilDragon
Just a thought, not sure it will make a difference but do you have full disk access enabled for Kontakt?