The Bug
Wall signs have a small gap between them and the block they are placed on. It's not a huge issue, but it looks odd.
Steps to Reproduce
Place down a sign on a wall.
Look closely at where the sign connects to the wall.
Observed Behavior
Wall signs float slightly in front of the block that they're supported by.
Expected Behavior
Wall signs would not float slightly in front of the block that they're supported by. Instead, they should be properly attached to the block that they're on.
Potential Fix
This could be fixed by converting wall signs to use a block model, and only using entity rendering for the text, to bring them closer in line with other blocks.
Related issues
is duplicated by
relates to
Attachments
Comments

And signs on fences have a huge gap.
This gap prevents Z-fighting between the backside of the sing and the face of the block its attached to 😉
btw: i noticed this a long time ago in beta 1.6
This gap never really bothered me, don't think it's a bug but if the gap can be tweaked, go ahead! 🙂
This isn't a bug.
Please, don't post minor annoyances to the bugtracker.
Is this actually invalid? Seems like an oversight to me. Dunno why it would be intentional behaviour. If this is re-opened, it affects 1.14 and 1.14-pre4.
Just because it's been like this forever doesn't mean it's right.
I don't know about the Minecraft internals but I imagine changing signs might break things.Â
Reopened and confirmed for the latest versions. This ticket should not have been closed in the first place.
Confirmed in 20w16a
Affects 20w17a
Affects 20w18a
Affects 20w19a
Affects 20w20b

Affects 20w21a, can I request ownership?
Confirmed/Reproduced in 20w27a.
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Can reproduce in 20w28a
Can confirm in 20w48a.
Can confirm in 20w51a.
Can confirm in 21w05b.
Can confirm in 21w06a.
Can confirm in 21w07a. Video attached.
How long has this been a thing? I don’t like it. It should be touching the block in my opinion.
Can confirm in 1.16.5 and 21w11a.

Can confirm in 21w13a.

Can confirm in 21w14a.
Can confirm in 21w15a.
Can confirm in 21w17a.

Can confirm in 21w18a.

Can confirm in 21w19a.

Can confirm in 1.17 Pre-release 3.
Can confirm in 1.17.

Can confirm in 1.17.1.

Can confirm in 21w39a.
Here are some extra details regarding this problem.
The Bug:
Wall signs float slightly in front of the block that they're supported by.
Steps to Reproduce:
Place down a sign on a wall.
Look closely at where the sign connects to the wall.
Observed Behavior:
Wall signs float slightly in front of the block that they're supported by.
Expected Behavior:
Wall signs would not float slightly in front of the block that they're supported by. Instead, they should be properly attached to the block that they're on.

Can confirm in 21w40a.

Can confirm in 21w42a.

Can confirm in 1.18 Pre-release 1.

Can confirm in 1.18 and 1.18.1 Pre-release 1.
Can confirm in 1.18.1.

Can confirm in 1.18.2.
Can confirm in 1.19.
Can confirm in 1.19.2.

Can confirm in 23w06a

This actually allows you to write on the back of a placed wall sign.
Never mind, the hitbox actually extends all the way to the supporting wall. So this bug is purely visual and has no effect on sign editing.
In 23w43a
While this is a bug, it allows for some cool secret messages. while I was able to write on the back on macOS by positioning my crosshair just right, but you can just use a bottom slab, write on the back, and convert that slab to a full block by placing another slab
Can confirm in all 1.20 versions.