Sorry for being so dumb, but I can't figure out how you created the Calendar table in the solution you'd sent. The column "Date" in particular. i see from the icon, that it's not a Measure and not a Calculated column, but the table itself has a formula.
VAR __planned = MAXX( ALLSELECTED( 'Calendar'[Date] ), [PlannedRemain] )
VAR __actual = MAXX( ALLSELECTED( 'Calendar'[Date] ), [ActualRemain] )
MAX( 'Calendar'[Date] ) = TODAY(),
MAX( __planned, __actual )
) * 1.0
The lines displayed nicely when I used "Wk No" (week number) instead of "Date" in Shared axis. But then the "Today" bar wasn't displayed since there's no reference to date. Please see attached screenshot.
Looks like I'm having trouble with Date table and its relationship.