Thanks for the hint about deleting the WAC charts. However, this is also an issue with IFR charts, and I don't think there's a workaround. Since January, zooming out on an IFR low chart will show EnrLowComp_US expired 1/1/2019. I sent a support email but nobody has replied in two months. Unlike the WAC, instrument routes do tend to change, especially as VORs are decommissioned.