fix: Backspace bug when current block is empty and previous block's last child is empty #7146
| Job | Run time |
|---|---|
| 1m 35s | |
| 3m 41s | |
| 2m 12s | |
| 2m 10s | |
| 3m 42s | |
| 2m 30s | |
| 2m 43s | |
| 2m 49s | |
| 43s | |
| 22m 5s |
| Job | Run time |
|---|---|
| 1m 35s | |
| 3m 41s | |
| 2m 12s | |
| 2m 10s | |
| 3m 42s | |
| 2m 30s | |
| 2m 43s | |
| 2m 49s | |
| 43s | |
| 22m 5s |