[wp-trac] [WordPress Trac] #28031: Broken category taxonomy on menu builder page

[WordPress Trac]

#28031: Broken category taxonomy on menu builder page
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 Reporter:  mihais        |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Taxonomy      |    Version:  3.9
 Severity:  normal        |   Keywords:
  Focuses:                |
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 Where: menu builder -> categories -> all
 When: the taxonomy is breaking after I create more than 50 categories.
 How to reproduce:
 - have the following tree of 51 categories (will trigger pagination on
 Menus > Categories - 50 items per page):
 --------------------------------------------------

 A
 - A01
 - A02
 - A03
 - A04
 - A05
 - A06
 - A07
 - A08
 - A09
 - A10
 - A11-
 B
 - B01
 - B02
 - B03
 - B04
 - B05
 - B06
 - B07
 - B08
 - B09
 - B10
 - B11-
 C
 - C01
 - C02
 - C03
 - C04
 - C05
 - C06
 - C07
 - C08
 - C09
 - C10
 - C11
 D
 - D01
 - D02
 - D03
 - D04
 - D05
 - D06
 - D07
 - D08
 - D09
 - D10
 - D11
 - D12
 L
 P
 --------------------------------------------------------------

 - category P will be on the second page
 - adding a new ROOT category greater than L  (M, N ....) will not affect
 the category tree - the new category will be on the second page.
 - adding a new ROOT category between D and L ( E,F, G, H, I, J, K) will
 push L on the second page and the new category will be the last one on the
 first page.
 - adding any other subcategory in the ROOT categories A, B, C, D or a new
 ROOT category (ex: A10000) will let L as the last element on the first
 page and the last element of  the last subcategory (in our case D12) will
 be pushed on the second page.
 - conclusion: the categories tree will break so that the last element on
 the first page is a ROOT category.

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Ticket URL: <https://core.trac.wordpress.org/ticket/28031>
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