Putting your thumb 2/3 to 4/5 of the way over to the right of the screen to drag it to the left means that there's distance for the drag track in case the image requires more dragging/scrolling
I'm honestly not sure how you're doing it. I gave 'the middle' as an extreme example. I think I can drag from 5/6's of the way over and it's still fine. I believe you're literally dragging from the edge and then yes of course... it will get confused with a drag from the edge to go back...
I'm not saying I don't ever do something like this, but when I do I usually realise and glide my thumb back over and release. I also then don't blame the UI, I realise I just had my thumb too close to the edge
I did a bit of a search for how big the gesture zone is and found this -
Honestly, come on. Surely those are tiny and if you're scrolling but start
that far to the edge of the screen, it's not a UI issue?!
It's quite interesting actually. On
the page that has that image there is some discussion that apps can exclude a portion of the edge from being 'back' so they can use it for their apps, but it cannot be taller than 200dp.
In our previous blog post we mentioned that “apps have the ability to exclude the system gestures for certain parts of the screen”. The way apps do that is via the system gesture exclusion APIs, new in Android 10.
Since the behavior which the API enables is disruptive to the user, the system limits how it’s usage: apps can only exclude up to 200dp per edge.
We think that users being able to consistently go back from an edge swipe is very important. Consistently across the entire device, not just a single app. The limit may seem restrictive, but it only takes a single app to exclude an entire edge of the screen to confuse a user, leading to either app uninstalls or something more drastic.