Quick switch of activities registers wrong name for currently running activity

[kralan]

I like the feature of quickly switching to a past activity by clicking the "play" icon in its entry. Alas, while the switch succeeds, the already running activity is registered with the wrong name.

Steps to reproduce:

1. Have activity A running.
2. Try switching to past activity B by clicking the "play" icon in an entry of B while A is running.

Expected behaviour:

1. Running activity A is stopped.
2. A new entry for activity B is copied from the past entry.
3. Activity B is running.

Observed behaviour:

1. Running activity A is stopped - ok - but the name is changed to B.
2. A new entry for activity B is copied from the past entry - ok.
3. Activity B is running - ok.