Here is the Woodland mansion screenshot there block and items are missing generating.
1: No Double Chest
2: Ladders missing
3: Iron Door missing
4: Mushroom missing
5: Generation
6: Generation
7: Floor 3, block missing
Woodland mansion is missing stuff here. Commmet this issue if you found bugs.
Comments 2
Thank you for your report!
However, this issue is Invalid.
Your game is modified.
If you can reproduce the issue in a vanilla environment, please recreate the issue.
Any non-standard client/server 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, add-on or resource pack.
If you have problems on large servers, such as Mineplex and Lifeboat, please contact them first as they run modified server software.
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You're using Pojav launcher, which is unsupported here and it may contain malware, therefore making this ticket invalid.