[wp-trac] [WordPress Trac] #44989: Twenty Seventeen: Sub menu with many items get cut off, doesn't scroll

[WordPress Trac]

#44989: Twenty Seventeen: Sub menu with many items get cut off, doesn't scroll
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 Reporter:  kokkieh        |      Owner:  (none)
     Type:  defect (bug)   |     Status:  new
 Priority:  normal         |  Milestone:  Awaiting Review
Component:  Bundled Theme  |    Version:  trunk
 Severity:  normal         |   Keywords:
  Focuses:                 |
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 === Steps to replicate ===

 1) With Twenty Seventeen active, create a custom menu containing a sub-
 menu with a high number of items - depending on your screen size, upwards
 of 14 menu items
 2) Publish the menu, and then try to access menu items towards the bottom
 of the sub-menu.

 === Result ===

 Some menu items are cut off at the bottom of the screen, and there's no
 way to have them scroll up to make them visible as the top-level menu for
 this theme is stuck to the top of the page.

 [[Image(menu.gif)]]

 Submenu here has 15 items, and sub-submenu has 5.

 === Expected ===

 For either the entire menu to scroll upwards, or for the sub-menu itself
 to be scrollable, but ultimately to be able to see menu items lower down
 on the sub-menus.

 Reported via the [https://en.forums.wordpress.com/topic/menu-glitch-
 twenty-seventeen-theme/ WordPress.com forums], but confirmed on both
 WordPress.com and Core sites.

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Ticket URL: <https://core.trac.wordpress.org/ticket/44989>
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