problem sharing powe point presenations in full view

hello,

last week i have noticed a problem sharing the full view screen of my power point presentaions.

i am familiar with zoom, and used to share screen alot of times with no problem, but since last week if i shares a presntation in full view, all the participants see it at working mode. i tried to reinstall zoom, restart my computer, but nothing helps.

i will appriciate any solution.

thanks