Multiple matches on same string

Hi there, when using this twice on the same string what is happens is as follows, the first string matches and an array containing the react component returned from the callback fucktion is returned, and than in the second replace, it skips the symbol that was returned from the first run because it is not a string...
I think the solution would be to use flattenDeep instead of flatten, and clarify that callback functions should return an array instead of a component.