Scrollable bottom-docked toolbars conflict with system navigation gestures

I'm hoping to open this for conversation because I'm not sure what the ideal solution is, or if it's even something we want to address.

Expected behavior

Users should be able to easily swipe left/right on an over-flowing horizontal toolbar.

Actual behavior

If you have the system navigation setting set to Gesture navigation, any scrollable toolbar that sits directly above the system navigation will cause a conflict, because a horizontal swipe on the system navigation acts as an app-switching mechanism. In other words, trying to swipe on the toolbar can result in accidental app-switching.

Side note: I've heard a few times about folks losing their posts when exiting the app and returning – could this be making the situation worse?

Demo (uses Gutenberg as the editor, but same issue applies to Aztec):

Steps to reproduce the behavior

1. Go to Settings » System » Gestures » System Navigation
2. Select Gesture Navigation
3. Start a new post or page using the Aztec editor
4. Try scrolling the bottom-docked keyboard rapidly
5. Observe that if you're not very accurate with your finger placement, you'll accidentally swipe the system navigation

Tested on [device], Android [version], WPAndroid [version]

Pixel 2, Android 10, tested via this PR although the issue appears to go back to the introduction of Gesture Navigation in Android 9.

Start by reproducing the conflict using the listed Android gesture-navigation settings and the Aztec editor's bottom-docked toolbar; the issue names no source file or test. Compare the behavior described in the linked PR context, then establish an agreed interaction or UI approach before implementation, with horizontal toolbar scrolling no longer triggering accidental app switching.