Help…on LCA

Hi, i’m just curious if anyone has an explaination of why the LCA’s wing is cranked like that? It’s cranked quite opposite to the usuals, and it must not be too good, unless i’m missing something. Usually the inboard is cranked with a higher swept angle for reasons such as forcing the vortex to be inboard rather than outboard and not have a possiblity of a high tip vortex as that might create instabilities (beside other reasons).