TR2X bug: the gym stopwatch ui can appear in story levels

[aredfan]

Regression since: 0.8

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The screenshot above shows the gym stopwatch ui appearing in a story level if these steps are followed:

1. /play 0
2. open the inventory and select the stopwatch
3. deselect the stopwatch, keep the inventory open
4. open the passport
5. select new game or load a savegame
6. open the inventory and select the stopwatch (this bug only happens the first time the inventory is opened)

Alt steps after 1-4:

5. exit to title
6. open the passport
7. select new game or load a savegame
8. open the inventory and select the stopwatch (this bug only happens the first time the inventory is opened)

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Update: Conversely, it's possible to get the story levels stopwatch ui to appear in the gym, with similar steps.
Update 2: It's also possible to get The Great Wall stopwatch ui to appear in another level such as Venice, with similar steps.