I use the floating menu with the corner swipe gesture a lot.. (Swipe right corner) but because it covers the whole right hand said of the screen, if there is a sidebar in an app that opens from the right, triggering it is very difficult. And I always trigger the floating menu instead. In an earlier version before the redesign (a year or two ago) a certain area of the screen's corner was allotted to the floating menu and I could use the part about or below it to trigger other apps side bar/menu functions without the floating menu coming up..

Conclusion: instead of having the trigger area being this - https://i.imgur.com/xFgvp7L.jpg make it like this - https://i.imgur.com/r3KnIvD.jpg (tigger area in Red) or let us choose

Here's an example:
https://gfycat.com/ShrillImmediateFairyfly