Has to double click to break/attack/click button and mouse shows

When I load up up ++Minecraft 1.13.2, sometimes I have to double click to click buttons in menus, break blocks, attack and select blocks. Also, the mouse appears when in-game but I can still move around as far as I want even when the mouse appears not to be moving. Both of these issues appear somewhat randomly, but they always appear together. Reloading the game sometimes works, and sometimes doesn't.