when i try to add one card block inside container block and both of having tabs functionality giving me error

[KBambharoliya]

so this uploaded picture is my current way to enter data and i'm getting error
"Cannot use 'in' operator to search for 'name' in undefined"

[hesselberg]

I'm experiencing something similar, where I have tabs as the first field, and inside a 'layout' field there's blocks that may contain tabs.

Not able to reproduce locally, only on production on Vercel

[thompsonsj]

Also experiencing this issue - my scenario is that I have a Lexical field within a tab, and that Lexical field has blocks with tabs. The issue is somewhat intermittent - I can remove the error by refreshing the page or switching tabs, but this doesn't always work.

Error | Call Stack

``` TypeError: Cannot use 'in' operator to search for 'name' in undefined at tabHasName (webpack-internal:///(app-pages-browser)/./node_modules/payload/dist/fields/config/types.js:71:19) at x$ (webpack-internal:///(app-pages-browser)/./node_modules/@payloadcms/ui/dist/exports/client/index.js:17680:128) at eval (webpack-internal:///(app-pages-browser)/./node_modules/@payloadcms/ui/dist/exports/client/index.js:6651:77) at xa (webpack-internal:///(app-pages-browser)/./node_modules/@payloadcms/ui/dist/exports/client/index.js:22486:83) at b (webpack-internal:///(app-pages-browser)/./node_modules/@payloadcms/ui/dist/exports/client/index.js:22564:78) at Array.map () at yo (webpack-internal:///(app-pages-browser)/./node_modules/@payloadcms/ui/dist/exports/client/index.js:22578:29) at zr (webpack-internal:///(app-pages-browser)/./node_modules/@payloadcms/richtext-lexical/dist/exports/client/index.js:744:73) at eval (webpack-internal:///(app-pages-browser)/./node_modules/@payloadcms/richtext-lexical/dist/exports/client/index.js:1074:77) at mountMemo (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:6153:23) at Object.useMemo (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react-dom/cjs/react-dom-client.development.js:23011:18) at exports.useMemo (webpack-internal:///(app-pages-browser)/./node_modules/next/dist/compiled/react/cjs/react.development.js:1214:34) at Qr (webpack-internal:///(app-pages-browser)/./node_modules/@payloadcms/richtext-lexical/dist/exports/client/index.js:1050:60) ```