Cannot put unstackable items in the buddle

You can't put unstackable items on bundles that already have items on them. Bundles can only hold one stack of items, and one minecart/axe/etc. counts as its own stack.

Thank you for your report!
We're tracking this issue in MC-203593, so this ticket is being resolved and linked as a duplicate.

That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.

If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki