When the tab button feature was added in 19w11a if we press a button with mouse that button Stays selected so for first page we can give space but when we move to the second page of book and quil the next page arrow stays selected and when we press space the book goes to next page we can't unselect the next page arrow
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We're actually already tracking this issue at MC-145798, so we will resolve and link this ticket as a duplicate.
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