Running macOS 10.15.5 (19F101), TotalFinder 1.12.3. Almost The computer turns on from sleep or I don’t use the finder a little long, I get a blank white window.
After I restart Finder everything is fine again. SIP is disabled and make sure totalfinder have the system events power.
by the way, open a new tab is also working, and blank white window seems to be with download folder.