Edit a post. Make sure it has enough content to scroll.
Insert the cursor near the top of the screen.
Tap the photo option on the format bar to insert an image at the cursor position.
I chose to insert an image from the gallery.
Pick an image to return to the editor.
Notice that the textfield has scrolled to the bottom of the screen, but the image has been inserted in the correct location.
We want to avoid scrolling away from where the image was inserted.