Browser doesn't show my file properly

Hi,
can somebody help me with this? I'm running out of ideas.

There is for some reason a discrepancy between what browser musescore shows and what my actual file shows in the software. I set up my file to hide blank staff in grand staff and it is shown properly in the browser except for two measures which (no matter what I do) still show the empty staff, despite the actual file hides it.

see examples below:
what I have in the actual file

what the browser shows

here is the composition
https://musescore.com/user/39454580/scores/6893704
the actual part are measures 48 and 49 in the third movement

Thanks for any advice.