Close application problem: In multiple screen, when I go to another screen, then back previous screen and press EXIT button. But it is not working properly

MIT App Inventor Help
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StudentPortal.aia (47.8 KB)

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Please download and post each of those event block(s)/procedures here ...
(sample video)

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You open screens multiple times. Sooner or later this leads to a memory problem / crash.

Try this (this way only one screen is open at a time):

Screen1:
grafik

Screen2:
grafik

and so on ...

openSwitch3Screens.aia (4.4 KB)

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