Issue when using multiple cards

[matthewhutchings]

Possible that this bug causes an issue. I have 48 cards over 4 dashboards and switching between dashboard stops working.

vendor.js?id=ad86e1e19118fef79e41:115718 [Vue warn]: Duplicate keys detected: 'text-card.undefined'. This may cause an update error.

found in

---> <Cards> at resources/js/components/Cards.vue
       <Dashboard> at resources/js/views/Dashboard.vue
         <Root>

[Egnaro]

I'm getting the same error if I try creating more than one card on a dashboard.