To reproduce:
  1. Create an empty folder, let's say "C:\SLVCache"
  2. Open SLV, and change the Cache folder to this new, empty "C:\SLVCache" folder
  3. Close SLV, re-open. Note that SLV will create all subfolders and support files in "C:\SLVCache"
  4. Login and use awhile.
  5. Close SLV
  6. Reopen SLV => notice that "C:\SLVCache\cef_cache" maintains its content
What Should Have Happened:
Upon startup, SLV will _delete_ the "cef_cache" subfolder (and its contents) in the cache folder and recreates the subfolder, empty.