Blocks MC-235953; even though it may seem like that issue is fixed, it is only because there is no longer any blending at all
This is a feature that already exists in the game elsewhere for items such as leather armor, wolf armor, and shulker boxes. In the case of bundles, this makes it impossible to get the undyed version back after dyeing a bundle, thus leading to a disconnect between similarly dyeable items.
This ticket was not requesting a new feature be added to bundles, it was requesting parity with other vanilla features. As such, it probably shouldn't be marked as a feature request seeing as this is behavior already exists for other items in the game, and should either be reopened if this behavior is unintentional, or marked as Works As Intended if it is intentional.
This only occurs for armour stands- I've attached a minimized resource pack with the issue isolated and updated the screenshots.
On a related note, walking on blocks in 1 block deep water no longer plays the swim sounds and instead plays the step sounds of the block below
1.19.3 has now made this issue even more apparent with Bamboo Fences, as they now use a custom item model called "custom_fence_inventory" which has the correct UV mapping and model, while other fences do not.
In addition to what was mentioned above, you can also see the mirroring for yourself directly if you replace the texture for an existing (static rotational) block with the texture for mud bricks, and place it next to actual mud bricks.
This also affects clouds, water, and lava (See attached screenshots)
It is intentional-- swimming is directly tied to sprinting, so when you can't sprint, you can't swim.
They were changed in 21w18a to explicitly not have transparency.
Use Fabulous! graphics
This is intentional. If two textures are layered very close to each other, they may look fine up close but start z-fighting when the player is far enough away, so they have to be offset quite a bit to prevent this.
This isnt meant to be sand and you can even tell from the fact that each slot is different from one another. It's just the "trick" that the devs used to use to make UI elements look shaded by simply adding noise over them.
This might be related to the switch to OpenGL 3.2. Your PC might not be compatible with it.
That's most likely a stronghold, since they generate large pockets of stone around them now. Try breaking in or using spectator to fly into it.
Affects 20w46a
While it may not be particularly helpful to talk about a mod on a vanilla bug forum, I thought it was worth mentioning that a popular mod called Sodium fixes both this issue and MC-148689, amongst others. If within reason, someone might want to ask the developer of the mod (JellySquid) to help out with these issues.
Affects all versions through 20w46a.
In addition to that, and while it may not be particularly helpful to talk about a mod on a vanilla bug forum, I thought it was worth mentioning that a popular mod called Sodium fixes both this issue and MC-1531, amongst others. If within reason, someone might want to ask the developer of the mod (JellySquid) to help out with these issues.
Added video of just the animation.
Affects 1.16.3, 1.16.4, 20w45a, and 20w46a.
This issue is blocked by MC-276988 as a result of there no longer being any blending at all