Since recently, sddm is creating strange folders containing what seems like log files in my home directory.
The folders have names like

|U
?U
?V
bU

and always contain this directory structure:

/home/user/(strange folder)/.local/share/sddm/xorg-session.log

this log file seems to have the same contents as the one in its usual location
/home/user/.local/share/sddm/xorg-session.log

For some reason, it started writing those log files into a randomly created folder in the home directory.