Net connection is not showing in PCB view in Altium
If I am not mistaken, Altium shows the air-wires only between the component and the nearest pad/track/via of the same net. It does not show airwires to all connections with the same net. That would leave to a VERY messy ratsnest that would not help with routing at all. If you drag the highlighted capacitor closer to the IC than to the other capacitor, you will see the airwire jump to the IC pad instead.