Fix/activate window manager in timer

[s-gbz]

Closes #32

Reviewer's task:

• [X] I didn't see no code smells
• [X] The live preview works as expected -> no regressions found

^Checking them off since I reviewed the final thing.

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Name	Status	Preview	Updated
screenario-react	✅ Ready (Inspect)	Visit Preview	Aug 10, 2022 at 9:11PM (UTC)