Menus should avoid showing scroll arrows when opened on a window that is near the bottom of the screen if there is room above

[jscipione]

This bug is easy to reproduce. Just take a window that has a menu bar, move it close to the bottom of the screen, but not too close, and then open up a menu from the menu bar. If you are really close to the bottom of the screen the menu will open above the menu bar (as it should), but if you are above some threshold (keep moving window up until you get there) above the window it will open the menu below the menu bar BUT with scroll arrows attached because it can't fit the whole menu between the top of the window and the bottom of the screen. Seeing this means you've triggered the bug.

Displaying scroll arrows here is silly because we don't need them, we already show the menu above the menu bar when you're a few pixels lower down the screen, we should do that here too because there is plenty of space above to show the menu. In the case that that is STILL not enough... only then should it show the scroll arrows.

This has been a bug for a long long time... since BeOS. I will attach screenshots showing the behavior happening on BeOS R5 and Haiku from 2015. We very successfully reproduced this not very great BeOS behavior.

[jscipione]

bottom menu scroll-arrows bug in 2015-ish Haiku

[jscipione]

bottom menu scroll-arrows bug in BeOS R5

[jscipione]

expected behavior: menu opens above the menu bar

[idefix]

You also submitted this bug six years ago. ;)

[jscipione]

Duplicate of #9093

So I did...