There are several known ways in which to render parts of this atlas through unintended means:
In 23w31a, editing the NBT of a furnace such that its fuel time or cooking duration exceeds normal values causes these elements to display areas outwith the normal bounds.[1]
Having a greater amount of XP than what is needed to reach the next level also causes the atlas to bleed.[2] For some versions, this requires resizing of the window to see. Values of XpP 11734884 and above will instead render an empty bar.
If the border value for nine_slice scaling is specified to be greater than or equal to 230 in mcmeta files, the elements in question is replaced with other parts of the atlas accordingly due to integer overflow.[3]
In versions prior to 25w45a, the jump bar at full capacity renders an around one pixel wide area of the atlas it shouldn't, which are usually transparent and therefore unnoticeable.[4] In later versions, instead of mapping empty regions of the atlas, it instead maps the extended edges of itself.