Created ticket #39966 on Core Trac:
Twenty Ten: Featured Images on Category/Archive pages

Created ticket #39573 on Core Trac:
Twenty Sixteen: Margin error with Portfolio and no widgets

Created ticket #39431 on Core Trac:
Sites with sticky posts show multiple posts on first page even if set to 1 ...

Created ticket #38623 on Core Trac:
Twenty Sixteen: Children items in menu can be pushed offscreen