The Double Chest's hitbox isn't correct. When near the center of a double chest, the hitbox is no longer recognized and it goes to the next block in line with the cross-hairs.
Reproduce↓
Get you cross-hairs near the middle of the latch on the double chest. It will no longer have selection box around the chest.
Here is pictures.
Thank you for your report!
We're actually already tracking this issue at MCPE-12031, so we will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature, to see if the issue has already been mentioned.
Suggested search terms for JIRA desktop view:
{color:#009900}mcpe unresolved double* chest*{color}Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki