Not worry about it!
Those are 'wipers' not seals.
They wipe the sides/top of moisture, dust, debris.....regardless if the flip or not they still wipe.
Some folks attached 'thread grip' along side of slide out so make the wipers flips.
ME.......I just dust seals and wipers with baby powder (in a sock) twice a year and not worry about it.
8 yrs. and seals/wipers are still flexible, functional.