directory outside, after pressing space:
Image: https://abload.de/img/bildschirminhalterfaspns38.png
the same dir from inside (correct size)
Image: https://abload.de/img/bildschirminhalterfasi7s56.png
yesterday i moved thousands of jpgs from one directory to another... after that operation, TC came up with a negative size for the now empty directory.
also, restarting TC does not help. what did help was rebuild the database in everything.
so.... not sure if it's a TC or everything issue.
/edit: ok, sorry, it's an everything issue, it also comes up with the same values in example 1.
