I've got a site with a vertical sidebar menu with a 250px max width setting, but after it reaches that max width a break begins to form between the vertical section and the main horizontal section.
Here's what's happening:

It's not an issue when I remove the max width value, but I really need that max width to prevent the menu from getting way too big at larger screen sizes.
Here's my settings for the vertical section:

And here's my settings for the horizontal section(s):

I don't have any padding settings for either.
The white area is neither a part of the vertical section or the horizontal section, and is unclickable:

The vertical section seems to be corrupted, deleting this section and creating it from scratch should resolve it