The title almost says it all. In previous Blender versions, when I rendered images with transparent background and saved them as PNG sequence, I could play the animation in Blender with "View Animation" (Ctrl+F11) and the animation had a transparent background.
Now in Blender 2.83 LTS (and I checked a 2.90 test build as well), the background is no longer shown as transparent, but purple like there is a missing texture or image. And it doesn't matter if I used an HDRI as background or just the default grey color. The player always shows the animation with a purple background. I tried switching from PNG to TIF and EXR, all the files are rendered and saved correctly with transparency - but the internal blender player seems to be unable to show transparency. Using an older 2.79 version playing the same image sequence shows correct transparency. Is there a setting I can't find to change it back to how it was before?
Thanks for your help.