What I expected to happen was...:
The name of the block to appear in the graphical list of block layers, along with either a blank icon or some representation of the texture.
What actually happened was...:
The name and the icon of the block is replaced by "Air"
Steps to Reproduce:
1. Go to Singleplayer → Create new world → More world options → Customise (with Superflat selected as the world type)
2. Enter the following preset code: minecraft:stone,minecraft:nether_portal;minecraft:plains; and select Use Preset.
Linked issues
discovered while testing 1
is duplicated by 6
MC-66728
tripwire is reported as air blocks in the superflat customization menu
Resolved
MC-77423
Using Cake in a preset cause it to show up as air
Resolved
MC-90818
Frosted ice in the Superflat Customization menu displayed to the air
Resolved
MC-92147
Superflat menu shows portal and end_portal as air but places correct block
Resolved
MC-119169
Superflat customization "hidden" blockstates show as Air
Resolved
1 more links
relates to 2
Attachments
Comments 29
19 more comments
Confirmed for 1.19.3.
Perhaps a good fix for the lack of icon would be "if there's no item form, show the block marker texture". The text should just insert the block translation keys directly, rather than look for an item.
[Mod] turbo
Can confirm