My phone is Vivo Y28. Check this picture.The tieon cobblestone wall has not tied like the fence.
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Affects 0.15.0 b2

Confirmed for 0.15.0. (Tested on Windows 10.)

Close request - I see this as a great feature, not a bug, because you can't lead horses to cobblestone walls in MC PC. Awaiting further input.

Please respond and add the current version if you can reproduce this issue.

Confirmed for 0.15.4. (Tested on Windows 10.)

Affects 0.16.0 beta build 4 AKA 0.15.90.7. Regardless of whether or not the functionality should be kept, I think this is still a bug because the lead should appear bigger when attached to a wall so that its point of attachment isn't invisible.
-Fixed - Leads can no longer be attached to cobble walls.-

Still affects 0.16.1. (Tested in Windows 10.) You can right-click a wall with a lead to attach the lead to it.
EDIT: Just tested, and it seems to also still affect MCPE, as of 0.17.0.1. @unknown, are you sure you tested this right?
Apologies, it does affect 0.16.2 and 1.0.0.0 beta still.
You can see it Z fighting when it's attached to a strip of walls.
[media]Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.
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Affects 1.16.100.
Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response
Is this still an issue in the latest version? If so, please add a comment or update the affected version field.
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affects 1.17.30.22

Can confirm in 1.21.40.23 Preview.

Thank you for your report!
After consideration, the issue is being closed as Won't Fix.
Please note that this is not the same as Working as Intended, as this bug report correctly describes behavior in the game that might not be the intended or desirable behavior, but it will not be fixed right now. Sometimes, this is because the issue reported is minor and/or impossible to change without large architectural changes to the code base.
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Confirmed
Leads can be attached to single cobblestone walls (including mossy variant). This may be a bug as the lead texture does not show it as tied to the wall, and in the PC/Java version leads cannot be attached to cobblestone walls at all.