After the device stays online for a few days without rebooting, it can no longer use gesture to activate the multitask pane. Regardless of how long you hold down on the screen after swiping up. Tried resetting already, bug still exists until device is rebooted.
Comments
I have uploaded a screen recording for your references:
https://mega.nz/file/PD4CjK5B#z4mZpKzddPnSw3eiLWcMuiMhcna52tdVSVJhCZDeSus
If you're switching between apps then you can swipe on the line at the bottom of the screen to switch between open apps
Doesn't matter how far down I swiped up from, it just won't trigger the pane.