Mouse cursor becomes invisible when focus is on site content.
For some websites, when I move the cursor over the Firefox display, the cursor disappears. If I move the cursor such that the cursor is at the screen margin and click, the cursor reappears. However, if I then move the cursor to a button in the Firefox display and click, the cursor disappears and the desired action does not occur. I had to change to Safari in order to navigate to this help page because the problem would not allow me to continue in Firefox.
For some websites, when I move the cursor over the Firefox display, the cursor disappears. If I move the cursor such that the cursor is at the screen margin and click, the cursor reappears. However, if I then move the cursor to a button in the Firefox display and click, the cursor disappears and the desired action does not occur. I had to change to Safari in order to navigate to this help page because the problem would not allow me to continue in Firefox.