nostr:npub1s33sw6y2p8kpz2t8avz5feu2n6yvfr6swykrnm2frletd7spnt5qew252p mentioned this problem in his latest video. In his case, the close transaction was broadcast with a 0 fee. No way to RBF either, apparently.

Not sure if there is a solution. Maybe he can chime in on the overall outcome...