How to reproduce
Step 1: Go kill a Pillager team and captain
Step 2: Collect the Banner
Step 3: Try and place the banner or break anything
Attachments
Comments 3
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 like Hypixel, please contact them first as they run modified server software.
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Upload the map somewhere and give us the link please.