Steps:
# Go to `Configure... -> Save`.
# Enter to `Default Save Filename -> Filename` tempate `%Y-%M-%D %H-%m-%S. %T`.
# Press `OK`.
# Save screenshot.
# Observe that screenshot filename matches pattern.
Examples of filenames with empty window title:
> | Input | Result |
> | --- | --- |
> | Screenshot_%T_ProjectX | Screenshot_ProjectX |
> | %T_ProjectX | ProjectX |
> | Screenshot_%T | Screenshot |
> | %T | Screenshot |