How to force close an app in ios13.6
New iPadPro, no Home button. How to force close open apps?
iPad Pro 12.9-inch, 3rd Gen, Wi-Fi, Cell
See the information in How to force an app to close on your iPhone, iPad, or iPod touch - Apple Support
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When your recently used apps appear, the apps aren’t open, but they're in standby mode to help you navigate and multitask. You should force an app to close only if it’s unresponsive.