Problem with IMAX support

[Модный Ахах]

I downloaded Spider-Man: Far from Home IMAX Edition (in some parts of the movie there are no black bars at the top and bottom). The movie is downloaded to a PC and is transferred via DLNA to an LG Oled C3 in the jellyfin application. The problem is that during IMAX scenes the black bars remain, but become relatively transparent. Is it really impossible to completely remove them? I tried watching through Plex or the built-in LG player and everything is fine there, but I lose Dolby Vision which jellyfin provides.