Always replace cracked window? Cover with valance okay?

[Andrew S.]

Hey community, Just curious if everyone replaces the double thermal pane assembly in a window if one of the panes has a relatively minor crack in it? The window I assume leaks in the winter. Crack is ~8" in the top corner of the upper window. C/ C+ class property. Is it ever acceptable to leave the window cracked for a new tenant? Or will this attract low class tenants who won't respect the property then? If I supply them with a window valance, you couldn't really see the crack. I understand that I'll eventually need to replace the window pane. Reason I'm considering my options is the window is a non-standard size so lead time may be an issue if it needs full replacement (also doesn't stay up). Thanks, Andrew