Could you please do some tests on your affected machine?
If the issue is 100% reproducible and caused by TotalFinder’s code, we could try to disable individual TotalFinder pieces one by one to isolate binary causing the trouble. It could be that TotalFinder corrupts some regions of Finder memory and that is causing the problems.
Please try these commands in Terminal.app, Finder restart is needed after each of them, use no to disable their effect again:
First try to disable all plugins:
defaults write com.apple.finder TotalFinderAllPluginsDisabled -bool yes
Then try to disable them one by one:
defaults write com.apple.finder TotalFinder[PLUGIN]Disabled -bool yes
Replace [PLUGIN] with these one by one:
Tabs
ColorfulSidebar
ColumnViewAutoWidth
CopyPathMenu
CutAndPaste
DockProgressBar
FoldersOnTop
Labels
NoDesktopDots
SystemFiles
Visor