FORCDK-CORE-009
Thrown by a shared forty-cdk/core check, which reports under the primitive that ran it.
[forty-cdk/{primitive}] FORCDK-CORE-009: `selectionFollowsFocus` is not supported together with virtualization (`totalCount` set).Cause
The virtualized activedescendant path resolves off-window navigation targets asynchronously, so selection cannot follow focus there.
Fix
Remove one of the two: use `selectionFollowsFocus` only with the non-virtualized {focusModel} {collection}.
Where it comes from
projects/forty-cdk/core/src/typeahead/list-typeahead.ts:150
A value in braces is filled in when the message is reported, so the sentence in your console names the piece, input or value that failed.