This causes the whole UI to freeze, stuck, especially when connected through slow connections like 3G / LTE and stuff.
--> Put the data-loading-stuff into a separate thread, allowing the UI-Thread to respond at any time. Display a loading circle until loading finished. (Then at least users can close the application without crashing it)
Extra: Handle Directory Navigation to abort the background-thread loading data.
(Version 5.15.5, Build 9925)