The Minecraft Launcher, at least on Windows, still uses an image of the Grass Block from before the Texture Update. Ideally, it should use the new one. (I can't tell if the Minecraft client itself - the crafting table icon - is affected by this too since its icon is so small.)
[media]Linked issues
is duplicated by 2
relates to 1
Attachments
Comments 7
Can confirm in 2.3.619 (New Windows App); related to MCL-21952.
I can no longer reproduce this behavior as a new launcher icon was introduced with BETA version 2.4.104 that replaced the grass block.
The texture difference is most noticeable with the side texture, since the texture update it's more "stripey".