Hi, thanks for this great feedback.
It seems sorting behavior isn't intended, we'll have it fixed.
Speaking of folder / preview view, do you mean that tiles in a grid view are too big by default and you would like more granular size control?
Speaking of folder cache duplication, is there any chance that within that duplicated folder you have two files where one is encrypted and the other isn't?
I would appreciate if you could send me an example or screenshot... perhaps there are some other commonalities? Does it apply to some folders more frequently etc.?