Runtime creating some images on a XAML page (as children of a canvas), assigning a BitmapImage as source. Occasionally the images (which are rather small) show partials of other images from within the application. After a redraw, the images are rendered correctly again (based on the same PNG files, running through the same code).
Sample with random wrong images:
Checked the resources on the Raspberry PI 3b but memory is only at 40%. And it does not happen all the time, so no reproduction path available.
Hope someone has a clue.