The bug
If you ignite and move a block of TNT at the same time, it will create a ghost block.
Linked issues
duplicates 1
Attachments
Comments 4
Reappearance of MC-151?
MC-172182
TNT creates ghost blocks when ignited and moved at the same time
Resolved
Duplicate
2
(Unassigned)
Confirmed
Redstone
1.15.2, 20w07a, 1.16.3, 20w49a, 1.16.5, 21w11a, 21w13a, 21w20a, 1.17 Release Candidate 2, 1.17
Retrieved
Affects 1.16.3
I swear I voted on another report on the same bug, but it was made private for some reason.
Also, may be related to MC-136709, another report on the same bug is MC-156977 (probably should forward-link since this report is confirmed)