On Hypixel, I noticed that a bunch of slots for selecting items were blocked, and I was unable to affect them in any way. I tried to troubleshoot this issue on different servers and single player worlds, and the same thing occurred. I was hoping this issue could be resolved, because the game is currently almost unplayable.
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 recreate the issue.
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.
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