When joining a server providing a server-resourcepack while holding a barrier block, all visible barrier particle textures will be replaced by pink wool and only change back to the barrier particle after some time, or "reloading" the barrier texture by selecting a different item in the hotbar and reselecting it.
Only happens after the server-resourcepack request is accepted.
(The server resourcepack in question does not change the particle texture)
Thank you for your report!
However, this issue has been closed as 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.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki