The heads (decorative blocks) placed on the wall do not touch it. This is a really small mistake that no one seems to care about, but I still wanted to report it.
I couldn't add screenshots directly, so here are the links to them:
https://cdn.discordapp.com/attachments/513404059336704021/705395898217136158/2020-04-30_14.25.47.png
https://cdn.discordapp.com/attachments/513404059336704021/705395884317212673/2020-04-30_14.25.45.png
Thank you for your report!
However, this issue is Invalid.
Your game, launcher or server is modified.
If you can reproduce the issue in a vanilla environment, please create a new ticket.
Any non-standard client/server/launcher build needs to be taken up with the appropriate team, not Mojang.
Any plugin issues need to be addressed to the creator of the plugin or resource pack.
If you have problems on large servers, such as The Hive and Hypixel, please contact them first as they run modified server software.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – ✍️ Feedback and Suggestions – 📖 Game Wiki