When I copied and pasted the Flex Container block twice and then deleted it, there were still 6 fields left in the value selection field.
When I tried to change the names of the remaining fields to “Input Float X 1” and “Input Float X 2,” the name of the main container and the nested one changed, not the name of my field.
And I have a request: when you copy blocks, the selection should be on the new ones, not the ones from which they were copied.