When opening two shells at the same time, history from the one that is closed first gets lost.

Steps to reproduce:
- let's call the contents of the history before this experiment `z`
- open two interactive shells called A and B
- execute commands in them, say `a` and `b`, respectively
- close shell A
- close shell B

Actual behavior:
- history contains `z` then `b`

Expected behavior:
- history contains `z` then `a` then `b`

possibly related: issue22940