When on a server, if the owner makes you not able to place blocks, when you place a block it will come back in your first free inventory slot and will be invisible you can still through the block on the ground but it appears invisible.
MC-86326
Invisible blocks on servers
Resolved
Invalid
0
This ticket is invalid as it relates to a modified or 3rd party server.
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.
This site is for addressing issues related to the base unmodded Minecraft; Bukkit, Forge, Optifine, modded servers such as The Hive, Overcast, Showbot, Hypixel or any other modded system invalidates your ticket, unless the behavior can be reproduced in Vanilla.
Additionally, if you have problems on large-scale modded servers, please report it to their site. It's probably not a bug in Vanilla Minecraft.