Can´t execute web- and mobile testsuite together in one collection

Parallel testcollection contains two testsuits:

Operating System: Windows 10
Katalon Studio Version: 7.9.0

Web Testing:
Browser Version: Chrome Version 84.0.4147.135 (Official Build) (64-bitt)

Mobile Testing:
Appium Version: 1.20.2
Mobile platform: Android 11
Emulator: Name: Nexus_5_API_30

Parallel testcollection contains two testsuits:
One testsuite runs with Chrome (the test has to be executed via Web)
The other testsuite runs with Android (the test has to be executed via Android)

Expected Behaviour:
When I click “Execute” the App starts on the Emulator and the Chrome Browser is opening. The Web testsuite runs without any problems and also the Mobile testsuite runs without any problems.

Actual Behaviour:
When I click “Execute” the App starts on the Emulator and the Chrome Browser is opening. The Web testsuite runs without any problems. But the Mobile testsuits is failing, because the application closes itself after a couple of seconds and so the testsuite is failing.

When I execute the parallel collection, the first testsuite in the row must be the Mobile testsuite, otherwise the mobile testsuite never starts.

When I execute that collection as sequentiell, only the first testsuite in the row is running; the second testsuite never starts

There are no usefull logges displayed in the log viewer