Scroll Bar disappears out of sight when click to enlarge Browser window

This is not listed anywhere I can find, so here goes…
The latest build has mucked up the scroll bar in the Linux version, >>when I click to enlarge the Brave window, the scroll bar disappears, so I click to reduce the window size and the browser closes suddenly. Then I will open the Browser a second time, and it is already enlarged and the scroll bar is fine…